Free tools
No sign-up, nothing saved to a server, nothing to install. If one of these turns into something you use every week, the 76 apps on the catalog page are the built-for-you version.
For your business
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Break-Even Calculator
How many units you need to sell, at your price and cost per unit, before your fixed costs are covered.
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Free Business Name Generator
Type a word for what you do, get a batch of name combinations to shortlist. A starting point for brainstorming, not a trademark check.
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Free Email Signature Generator
Fill in your details, get a clean HTML email signature to paste into Gmail, Outlook or Apple Mail's signature settings.
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Free Invoice Generator
Fill in line items, get a clean printable invoice. Use your browser's print dialog to save it as a PDF, nothing is uploaded.
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Free QR Code Generator
Turn a URL, phone number or any text into a downloadable QR code, generated entirely in your browser. Nothing you type is sent anywhere.
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Free Quote & Estimate Generator
Build a clean, printable quote or estimate with line items and a validity date. Save it as a PDF straight from your browser's print dialog.
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Freelance Day Rate Calculator
For quoting projects or retainers by the day instead of the hour: what to charge per day given your income target, overhead and billable days.
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Markup & Margin Calculator
Work from cost and a target markup or margin to get the selling price, or go the other way from cost and price to see both percentages.
Everyday tools
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Age Calculator
Enter a birth date and get the exact age in years, months and days, plus how long until the next birthday.
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BMI Calculator
Body mass index from height and weight, in metric or US units, with the standard WHO category ranges.
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Free Password Generator
Random passwords generated in your browser with the Web Crypto API. Nothing is sent anywhere or stored.
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Loan & Mortgage Payment Calculator
Monthly payment, total interest and total paid for a fixed-rate loan or mortgage, from the amount, rate and term.
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Percentage Calculator
Three calculators in one: what X% of a number is, what percent one number is of another, and percentage change between two numbers.
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Tip Calculator
Work out the tip and the total, split evenly across however many people were at the table.
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Unit Converter
Convert length, weight and temperature between metric and US units.
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Word & Character Counter
Live word count, character count, sentence count and estimated reading time as you type or paste.
Developer tools
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JSON Formatter & Validator
Paste JSON, get it pretty-printed and validated, with the exact parse error and position if it's broken.
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Lorem Ipsum Generator
Placeholder text generator: pick a number of paragraphs, sentences or words of classic lorem ipsum.
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Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case.
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Timestamp / Unix Time Converter
Convert a Unix timestamp to a readable date, or a date to its Unix timestamp, in your browser's local time and UTC.