Open menu

Free calculators, templates & tools – private by default

128 tools across 9 categories. No sign-up. Your data stays in your browser.

Browse all toolsOpen Accounts workspace

All 128 tools

Developer Tools 68

  • Color ConverterConvert colors between HEX, RGB, HSL, HWB, OKLCH and OKLab. Paste any CSS color, adjust it with OKLCH sliders and check contrast with black and white text.New
  • CSS Button GeneratorDesign CSS buttons visually with 16 styles, 35+ hover effects, every state and 160 presets. Export CSS, SCSS, Tailwind, React or Shopify Liquid.New
  • CSS Card GeneratorDesign CSS cards: vertical, horizontal, image overlay, profile, pricing and stat layouts with shadows, borders and hover effects. Export HTML, CSS, React.New
  • Meta Tag & Open Graph GeneratorGenerate SEO meta tags, Open Graph and X card tags with live search and link previews, character and pixel-width counters, and checks for common mistakes.New
  • Color Contrast CheckerCheck text and UI color contrast against WCAG 2.2 (AA, AAA, 3:1 for UI), see the APCA score (draft), and get the nearest passing color in one click.New
  • JSON Formatter & ValidatorFormat, validate and minify JSON in your browser. Errors show the exact line and column, comments and trailing commas can be fixed, and keys can be sorted.New
Show all 68
  • Color Palette GeneratorGenerate a color palette from one base color: harmonies plus a 50–950 OKLCH shade scale. Text-safe shades; export CSS, SCSS, Tailwind or JSON tokens.New
  • CSS Gradient GeneratorDesign CSS gradients visually: drag color stops, mix in OKLCH, build mesh gradients and add grain. 300 presets; export CSS, Tailwind, SVG or PNG.NewPopular
  • CSS Grid GeneratorBuild CSS grid layouts visually: set column and row tracks, paint named areas cell by cell, or make auto-fill grids. Export CSS, Tailwind or React.New
  • JavaScript Minifier – Terser in Your BrowserMinify JavaScript with Terser in your browser: Safe, Balanced or Max presets, license comments kept, source maps, diff view and gzip and brotli sizes.New
  • JSON-LD Schema Markup GeneratorGenerate JSON-LD structured data for articles, products, FAQs, local businesses, breadcrumbs, events, recipes, software and more, with required fields.New
  • CSS Flexbox PlaygroundLearn and build flexbox layouts: direction, wrap, justify-content, align-items, gap and per-item grow, shrink, basis, order, align-self. CSS and Tailwind.New
  • Favicon GeneratorCreate a full favicon set from an image, letters or an emoji: favicon.ico, PNG icons, Apple touch icon, maskable icon, SVG and web manifest in one ZIP.New
  • HTML Minifier – Compress HTML Safely in Your BrowserMinify HTML in your browser: collapse whitespace, drop comments and redundant attributes, minify inline CSS and JS, and keep <pre> content intact.New
  • Regex TesterTest JavaScript regular expressions live, with highlighted matches, named groups, replacement preview, a plain-language explanation and common patterns.New
  • Animated Background GeneratorCreate animated CSS backgrounds: aurora, gradients, waves, starfields, snow, grids and blobs. Stack layers, check performance, export CSS, React or HTML.New
  • Base64 Encode & DecodeEncode text or files to Base64 and decode Base64 back, with full UTF-8 support, the URL-safe alphabet, optional padding and MIME line wrapping.New
  • CSS Component Kit GeneratorCombine a button, form field, card and badge from the studios into one consistent mini design system with shared CSS variables, Tailwind theme and tokens.New
  • SVG OptimizerShrink SVG files in your browser: remove editor metadata, comments and unused IDs, round numbers, compact paths and strip scripts, with a live preview.New
  • CSS Animation GeneratorBuild CSS keyframe animations visually with a timeline, springs and scroll-driven triggers. 140+ ready animations; export CSS, SCSS, Tailwind or React.New
  • CSS Input & Form Field StylerStyle accessible form fields: outlined, filled, underline, floating-label and pill inputs with focus, error and disabled states, plus contrast checks.New
  • JWT DecoderDecode JSON Web Tokens in your browser: header, payload and claims with readable dates, expiry and safety checks, plus optional HS256 verification.New
  • Robots.txt Generator & TesterBuild a robots.txt file with presets for typical sites, WordPress and blocking AI crawlers, then test any URL against Google’s rules before publishing.New
  • CSS Hover EffectsOver 200 copy-ready CSS hover effects for cards, images, links, menus and icon buttons. Tune timing and colors, then export CSS, Tailwind or React.New
  • UUID Generator (v4, v7, ULID, NanoID)Generate random UUID v4, time-ordered UUID v7, ULID and NanoID values in bulk with your browser's secure random generator, and inspect any UUID's version.New
  • XML Sitemap GeneratorTurn a list of URLs into a valid sitemap.xml or sitemap index, with optional lastmod, duplicate and invalid URL removal, host checks and XML escaping.New
  • CSS Text EffectsCSS text effects: gradient, outline, long shadow, neon, glitch, typewriter, reveal, marquee, highlighter and 3D. 60 presets; export CSS, Tailwind or React.New
  • URL Encode & DecodePercent-encode text for URLs, decode %XX sequences, and parse any URL into its parts and query parameters, with tracking parameters flagged and removed.New
  • CSS Loader & Spinner GeneratorOver 100 pure-CSS loaders: spinners, dots, bars, pulses, progress bars, skeletons and more. Accessible markup, reduced-motion support and copy-ready code.New
  • JSON to CSV Converter (and CSV to JSON)Convert JSON arrays to CSV and CSV to JSON. Nested objects flatten to dot paths, delimiters are detected, numbers inferred, and Excel UTF-8 is optional.New
  • JSON to YAML Converter (and YAML to JSON)Convert JSON to clean YAML and YAML to JSON for configs, Docker Compose, Kubernetes and CI files. Ambiguous values are quoted and errors show the line.New
  • Code Beautifier – Format JavaScript, CSS, HTML and JSONTurn minified or messy JavaScript, CSS, HTML and JSON into readable code with consistent indentation, in your browser. Minify again with one click.New
  • CSS Toggle Switch, Checkbox & Radio DesignerDesign accessible toggle switches, checkboxes and radio buttons from native inputs: six styles, any size and color, focus rings and reduced-motion support.New
  • Font Pairing ToolPair heading and body fonts from 13 system font stacks (no downloads), preview them in an article, tune size and line height, and copy CSS or Tailwind.New
  • JSON Diff – Compare Two JSON FilesCompare two JSON documents structurally: see every added, removed and changed value by path, ignore array order, and export an RFC 6902 JSON Patch.New
  • Gzip & Brotli Size Checker – Compression Size AnalyzerSee how big your JavaScript, CSS, HTML, SVG or JSON is raw, minified, gzipped and brotli-compressed, with a chart of the savings. Runs in your browser.New
  • Hash Generator (SHA-256, SHA-512, MD5)Compute SHA-256, SHA-384, SHA-512, SHA-1 and MD5 hashes of text or files in your browser, create HMACs, and verify downloads against a checksum.New
  • Fluid Type Scale GeneratorGenerate a fluid type scale with clamp(): set base sizes and ratios for small and large screens, preview any width, and export CSS, SCSS, Tailwind or JSON.New
  • Image to Base64 ConverterConvert PNG, JPG, WebP, GIF, AVIF or SVG images to Base64 data URIs with ready CSS, HTML img or Markdown snippets and size guidance. Images stay local.New
  • Lorem Ipsum GeneratorGenerate placeholder text by paragraphs, sentences or words in Latin, English, German, Spanish or Russian, with optional HTML paragraphs and word counts.New
  • CSS Box Shadow GeneratorBuild layered CSS box shadows visually: drag offsets, stack up to six layers, generate smooth eased shadows and export CSS, SCSS or Tailwind.New
  • HTML Entity Encoder & DecoderEscape text for HTML with named, decimal or hex character references, or decode entities back to characters. Escape only special characters, or more.New
  • Color Palette from ImageExtract the main colors from any photo or logo in your browser. Choose 2–12 colors, see each one’s share, and export CSS, SCSS, Tailwind or JSON.New
  • CSS Text Shadow GeneratorCreate CSS text shadows layer by layer: soft lifts, neon glows, letterpress, emboss, outlines and retro stacks, with a contrast check and Tailwind export.New
  • CSS Tooltip GeneratorAccessible CSS tooltips: four positions, arrows, fade, scale or slide animations and delays. Opens on hover and focus, stays hoverable, closes with Escape.New
  • Design Tokens GeneratorGenerate design tokens from three brand colors: color scales, semantic aliases, spacing, type, radii, shadows. Export CSS, DTCG JSON, SCSS, Tailwind, JS.New
  • CSS Border GeneratorDesign CSS borders: line styles, per-side widths and colors, outlines, gradient and animated borders. Checks UI contrast; exports CSS or Tailwind.New
  • Tailwind to CSS ConverterConvert Tailwind classes to plain CSS, including hover focus dark and breakpoint variants and arbitrary values, or turn CSS into Tailwind classes.New
  • CSS Border Radius & Blob GeneratorRound corners, pills, leaves and drops, or drag four handles to build organic blobs from all eight border-radius values. Optional morph animation.New
  • CSS Minifier & BeautifierMinify CSS with Lightning CSS or CSSO, or beautify it, in your browser. Keeps license comments, makes source maps and shows gzip and brotli sizes.New
  • Glass Background StudioDesign a whole glassmorphism scene: blurred blobs behind 1–3 glass layers, grain, a no-blur fallback and contrast checks. Export CSS, Tailwind or React.New
  • CSS Glassmorphism GeneratorCreate frosted-glass panels with backdrop-filter: blur, tint, saturation, edges and grain over colorful backgrounds, with a fallback and contrast check.New
  • CSS Specificity CalculatorCalculate CSS selector specificity (a, b, c) with a breakdown of what counts. Handles :is(), :not(), :has(), :where(), :nth-child(of S), pseudo-elements.New
  • CSS Neumorphism GeneratorGenerate neumorphic soft-UI styles: flat, concave, convex and pressed surfaces from one base color, with light direction and an accessible edge.New
  • CSS Badge & Tag GeneratorCSS badges, tags and chips: solid, soft, outline, dot, gradient, icon, removable chip and count styles in six tones with readable contrast.New
  • CSS Clip-path GeneratorMake CSS clip-path shapes visually: drag polygon points, add or remove them, or use circle, ellipse and inset. 36 presets incl. stars, arrows, hexagons.New
  • Password GeneratorGenerate strong random passwords in your browser with the Web Crypto API. Choose length and character sets and see the entropy. Nothing is sent or stored.
  • px to rem ConverterConvert px to rem and em (and back) with any root size, or convert a whole stylesheet at once. Export CSS variables, CSV or an SCSS rem() function.New
  • SVG Shape Divider GeneratorCreate SVG section dividers: waves, curves, tilts, triangles, arrows, zigzags, mountains and clouds. Flip, invert, layer; export HTML, CSS, SVG or React.New
  • SVG Wave GeneratorGenerate organic SVG waves: smooth, peaked or stepped outlines, layered with fading opacity or a gradient. Randomize, then export SVG, HTML, CSS or React.New
  • SVG Pattern GeneratorSeamless background patterns: dots, grids, graph paper, diagonals, checkers, hexagons, waves, stars and more. Export as CSS, an SVG tile or Tailwind.New
  • CSS Scrollbar StylerStyle scrollbars in Chrome, Edge, Safari and Firefox: width, thumb, track, hover color, radius and inset, with fallbacks for every browser.New
  • CSS Cursor GeneratorTry every CSS cursor keyword, or design a custom SVG cursor (dot, ring, crosshair, arrow, hand, pen, star) with the right hotspot and a fallback.New
  • CSS Media & Container Query GeneratorBuild CSS media and container queries: width ranges, modern range syntax, dark mode, reduced motion, hover and contrast, with a live 'matches now' check.New
  • CSS Transform GeneratorGenerate CSS transforms: translate, rotate and scale on X, Y and Z, skew, perspective and transform-origin. 2D and 3D presets; CSS export.New
  • CSS Filter & Backdrop-filter GeneratorApply CSS filters visually: blur, brightness, contrast, grayscale, hue, invert, opacity, saturation, sepia and drop-shadow, or backdrop-filter glass.New
  • CSS Cubic-bezier EditorDesign CSS easing curves: drag the cubic-bezier handles, compare your curve with ease and linear in a live race, and export CSS, Tailwind or JS.New
  • Aspect Ratio CalculatorSimplify aspect ratios, find the missing width or height, and get CSS aspect-ratio code, Tailwind classes or image markup that prevents layout shift.New

AI Prompt Builders 2

  • Website Prompt BuilderTurn your website idea into a complete, model-ready build prompt. Choose pages, stack, design, SEO and accessibility, then copy it for Claude or ChatGPT.New
  • Section Prompt BuilderGenerate precise prompts for one UI section at a time — hero, navbar, pricing, cart drawer and 40+ more — with states and accessibility built in.New

Construction 29

  • BTU Calculator for Room Air ConditionersFind the BTU/h cooling capacity for a room air conditioner from room area, sun, occupants and kitchen use, using the ENERGY STAR sizing chart.New
  • Concrete CalculatorWork out how much concrete you need for a slab, patio or footing in cubic yards or m³, plus how many 40, 60 or 80 lb bags to buy, waste included.Popular
  • Deck CalculatorEstimate deck boards, joists, fasteners and footings for a rectangular deck from its size, board width and gap, joist spacing and post spacing.New
  • Drywall CalculatorEstimate how many drywall or plasterboard sheets you need for walls and ceilings, minus doors and windows, plus screws, joint compound and tape.New
  • Roof Pitch CalculatorConvert rise and run into roof pitch (x/12), degrees and percent slope, with rafter length, the area multiplier and sloped roof area.New
  • Square Footage CalculatorAdd up the area of rectangles, triangles, circles and trapezoids in square feet or square metres, subtract cut-outs and add an allowance for waste.New
Show all 29
  • Stair CalculatorWork out riser height, number of steps, tread depth, total run and stringer length, with optional US IRC or Australian NCC limit checks.New
  • Voltage Drop CalculatorCalculate voltage drop for copper or aluminium wire by AWG or mm², single- or three-phase, with the NEC 3% and 5% recommendations for US circuits.New
  • Fence CalculatorEstimate fence posts, pickets or panels, rails and bags of concrete for post holes from fence length, post spacing, gates and hole size.New
  • Project Materials ListCollect material takeoffs from every construction calculator into one project list, total them by material, add prices and export to CSV.New
  • Rebar CalculatorEstimate rebar for a slab grid: bars each way, total length with laps and waste, weight from ASTM or metric sizes, and stock bars to buy.New
  • Renovation Cost CalculatorBuild a renovation budget from your own line items with quantities and prices, then add a contingency and tax to see the total.New
  • Volume Calculator for Soil, Gravel & FillCalculate cubic yards, cubic metres or cubic feet of soil, gravel, mulch or fill for any area and depth, with a swell or shrink factor and weight.New
  • Wall Framing CalculatorEstimate how many studs and how much plate timber you need for a wall, from its length, stud spacing, openings and corners, with waste.New
  • Board Feet CalculatorCalculate board feet for lumber from thickness, width, length and quantity, with waste, cubic volume and a price per board foot estimate.New
  • Insulation R-Value and U-Value CalculatorAdd up the thermal resistance of wall, roof or floor layers from thickness and conductivity to get RSI, the U-value and the US R-value.New
  • Pavers CalculatorEstimate how many pavers you need for a patio or path, with base and bedding sand volumes, edge restraint length and an allowance for cuts.New
  • Asphalt CalculatorWork out how much asphalt you need for a driveway or path: volume from area and thickness, and tonnes from your supplier’s density.New
  • Construction Payment SchedulePlan construction progress payments: split the contract into stages by percentage, see each payment, retainage held and whether stages add up to 100%.New
  • Construction Unit ConverterConvert lengths between feet-and-inches fractions, inches, feet, metres and millimetres, and slopes between percent, degrees, x:12 pitch and 1-in-n.New
  • Contractor Quote ComparisonCompare up to three contractor quotes line by line, see totals and the lowest price, and rank them with weighted scores for price, quality and schedule.New
  • Cut and Fill CalculatorBalance earthworks: compare cut and compacted fill volumes with swell and shrink factors to see the surplus to haul away or the fill to import.New
  • Labor Hours CalculatorEstimate labor hours, crew days and labor cost for a job from your own task quantities and productivity rates, crew size and hourly rate.New
  • Plaster and Render CalculatorEstimate plaster or render for walls and ceilings: volume from area and thickness, and kilograms and bags from the product’s consumption figure.New
  • Rainwater Tank CalculatorEstimate how much rainwater your roof can collect each year and how long a tank lasts at your daily use, in litres or US gallons.New
  • Retaining Wall Block CalculatorEstimate blocks, caps, drainage gravel and drain pipe for a segmental retaining wall from its length, height and block size.New
  • Solar Panel CalculatorEstimate how many solar panels you need from your yearly electricity use, the specific yield for your location from PVWatts or PVGIS, and panel rating.New
  • Tile, Grout and Adhesive CalculatorCalculate how many tiles, how much grout and how much tile adhesive you need from the area, tile size, joint width and depth.New
  • Wallpaper CalculatorWork out how many rolls of wallpaper you need from wall widths and height, roll size and pattern repeat, with a trim allowance and waste.New

Finance 11

  • Break-Even CalculatorFind how many units you must sell to cover fixed costs, the break-even revenue, contribution margin and the sales needed to reach a profit target.New
  • Margin & Markup CalculatorConvert between cost, selling price, profit margin and markup. Find the price for a target margin, or the margin and markup from cost and price.New
  • CAGR & XIRR CalculatorCalculate the compound annual growth rate between two values, or the XIRR of dated cash flows with deposits and withdrawals at any time.New
  • Invoice GeneratorCreate a simple invoice in your browser: seller and buyer details, line items with quantity, price and tax rate, totals, then print or save it as a PDF.New
  • Net Worth CalculatorAdd up what you own and what you owe to find your net worth and debt-to-asset ratio, with a simple chart you can print or save as a link.New
  • ROI CalculatorCalculate return on investment from cost and final value, the profit, and the annualised ROI so investments held for different periods can be compared.New
Show all 11
  • Salary ConverterConvert an hourly wage to yearly, monthly, weekly and daily pay, or a yearly salary to an hourly rate, based on your hours and weeks worked.New
  • Cash Flow ForecastPlan your cash for the next 12 months: add money in and out, monthly, quarterly or one-off, and see the monthly balance, closing cash and lowest point.New
  • Currency ConverterConvert an amount between currencies using the exchange rate you enter, see the inverse rate, and include a conversion fee to find the effective rate.New
  • Discount CalculatorCalculate the sale price after one or two stacked discounts, how much you save, the real total discount and the price with sales tax added.New
  • Tip CalculatorCalculate the tip and total on a bill, split it between any number of people, and optionally round the total up to a whole amount.New

Mom, Baby & Kids 6

  • Kids Chart Maker – Routines, Chores, Rewards & MoreMake printable routine, chore, reward, habit, reading, potty and milestone charts for kids. 50 designs, 300+ age-appropriate tasks, tap to tick. Free.New
  • Allowance Calculator for KidsWork out a weekly allowance for your child by age or a fixed amount, see monthly and yearly totals, and how long it takes to reach a savings goal.New
  • Birth Plan BuilderWrite your birth plan in minutes: choose your preferences for environment, comfort, the birth and afterwards, add notes, and print a one-page plan.New
  • Birthday Party PlannerPlan a kids’ birthday party: budget from guests and costs per head, venue and extras, a pizza counter, and a 4-week party timeline checklist.New
  • Hospital Bag ChecklistA printable hospital bag checklist for labour and birth: documents, things for you, the baby and your birth partner, with an option to save your progress.New
  • Screen Time Planner for KidsPlan your child’s screen time and compare it with WHO guidance for under-5s: none under 2, no more than 1 hour a day at 2–4, plus family media plan ideas.New

Love & Relationships 8

  • Couple Advice GuideGet a personalised relationship plan: what’s likely happening, actions for this week, a conversation script, a 4-week checklist and date ideas. Private.New
  • Date Idea GeneratorFind date ideas that fit: filter 300+ ideas by budget, time, season, energy, indoor or outdoor, home or out, and kid-friendly, then plan with a checklist.New
  • Difficult Conversation PlannerPrepare a difficult talk with your partner: turn feelings and needs into a calm script with an opening, I-statements, replies to reactions and timing tips.New
  • Gift Idea Finder for Your PartnerFind a gift your partner will love: pick the occasion, budget, relationship stage and interests for ideas to keep, experiences and handmade gifts.New
  • Anniversary & Days-Together CalculatorSee exactly how many days, weeks, months and years you’ve been together, your next milestones like 1,000 days, and traditional anniversary themes by year.New
  • How We Show Love QuizA free 20-question quiz for couples about how you each like to feel loved: kind words, time, help, gifts or affection. Pass the phone, compare results.New
Show all 8
  • Love Message & Letter HelperWrite a heartfelt message for any occasion: choose the tone and length, add a memory and something you love about them, and edit a ready-made draft.New
  • Name Compatibility Game (Just for Fun)A light-hearted game that turns two first names into a playful score, a couple name and shared letters. Just for fun: it says nothing about compatibility.New

Converters & Everyday 1

  • Percentage CalculatorFind X% of a number, what percent one number is of another, and the percent increase or decrease between two values, all at once with worked examples.

Text Tools 1

  • Word CounterCount words, characters, sentences and paragraphs instantly, and estimate reading and speaking time. Your text stays in your browser and is never uploaded.

Accounts & Bookkeeping 2

  • Business bookkeepingFree double-entry bookkeeping for freelancers and small businesses: invoices, bills, bank reconciliation and reports. Your books stay in your browser.New
  • Household accountsTrack family money in your browser: income, spending, envelopes, bills, shared costs, debt payoff and net worth. Free, no sign-up, nothing uploaded.New

  • Concrete Calculator

    Work out how much concrete you need for a slab, patio or footing in cubic yards or m³, plus how many 40, 60 or 80 lb bags to buy, waste included.

  • CSS Gradient Generator

    Design CSS gradients visually: drag color stops, mix in OKLCH, build mesh gradients and add grain. 300 presets; export CSS, Tailwind, SVG or PNG.

  • CSS Button Generator

    Design CSS buttons visually with 16 styles, 35+ hover effects, every state and 160 presets. Export CSS, SCSS, Tailwind, React or Shopify Liquid.

  • Website Prompt Builder

    Turn your website idea into a complete, model-ready build prompt. Choose pages, stack, design, SEO and accessibility, then copy it for Claude or ChatGPT.

  • Percentage Calculator

    Find X% of a number, what percent one number is of another, and the percent increase or decrease between two values, all at once with worked examples.

  • Word Counter

    Count words, characters, sentences and paragraphs instantly, and estimate reading and speaking time. Your text stays in your browser and is never uploaded.

  • Business bookkeeping

    Free double-entry bookkeeping for freelancers and small businesses: invoices, bills, bank reconciliation and reports. Your books stay in your browser.

  • Color Converter

    Convert colors between HEX, RGB, HSL, HWB, OKLCH and OKLab. Paste any CSS color, adjust it with OKLCH sliders and check contrast with black and white text.

Explore by category

How it works

  1. Pick a tool

    Search or browse by category. Every tool opens instantly, with nothing to install.

  2. Enter your numbers

    Results update as you type, with the formula and a worked example on the same page.

  3. Export or save locally

    Copy, print or download the result. Anything you save stays in this browser.

Bookkeeping that never leaves your device

The Accounts workspace keeps double-entry books for a small business or a household, right in your browser.

  • Business mode: invoices, bills, bank reconciliation and reports.
  • Household mode: envelopes, bills, shared costs and debt payoff.
  • Exports to Excel, Word, PDF and CSV; nothing is uploaded.

See how the workspace worksOpen workspace

The Accounts workspace dashboard for a demo company: cash and bank balance, money in and out this month, and recent entries.

Free Excel templates

  • .xlsx

    Small Business Bookkeeping All-in-One

    Keep a full set of books in one workbook: chart of accounts, journal, ledger, trial balance, profit and loss, balance sheet and cash flow, with checks that tell you when something does not add up.

  • .xlsx

    Invoice

    A printable invoice with per-line tax, totals and the amount due.

  • .xlsx

    Cash Book

    Record money in and out with a running balance and a month-by-category summary.

  • .xlsx

    Bank Reconciliation

    Reconcile the bank statement with your books: adjusted bank balance equals adjusted book balance.

  • .xlsx

    12-Month Business Budget

    Budget each account by month, enter actuals and see variances with a favourable or unfavourable flag.

  • .xlsx

    Household Budget

    Plan income and spending by category for 12 months and compare with what actually happened.

All templates →

Latest guides

Frequently asked questions

Are the tools really free?

Yes. Every tool is free to use with no account, trial or paywall.

Do you store what I type?

No. Calculations run in your browser and your inputs are not sent to us. Tools that save work, such as the Accounts workspace, keep it in your browser storage on this device.

How do you make sure results are right?

Each tool shows its formula, works through an example and links to the standards or official sources it relies on. Data such as tax rates carries the date it was last checked.

Is this financial, medical or legal advice?

No. The tools give estimates and explanations for education and planning. For decisions about money, health or the law, speak to a qualified professional.

Can I use the tools on my phone?

Yes. Every page works on phones, tablets and desktops, with large touch targets and keyboard support.

How do I report a mistake or suggest a tool?

Use the contact page. Corrections are logged publicly on our corrections page.

Find your tool

Search every tool by name or task.

Search toolsBrowse all tools