About Laborilo

Laborilo is a small, growing collection of free, single-purpose web tools. Calculators, converters, generators, and developer utilities built to do one job well. No account, no paywall, no clutter.

Each tool runs entirely in your browser. What you type, paste, or upload stays on your device and is never sent to or stored on our servers. A couple of tools fetch public data to work. The currency converter pulls live exchange rates from a third-party API, and the pomodoro timer saves your session count to your browser's local storage. But that's separate from anything you personally enter, and never leaves your device.

Every tool below started as its own small, separately-branded page (TipTally, PassForge, HashIt, and so on). This page brings all 38 together in one place, grouped by what they do, so there's a single, current directory instead of hunting through each tool's own About page.

Calculators

• Percentage Calculator. Percentages, percent of, percentage change, and more.
• BMI Calculator, Body Mass Index in metric or imperial, with weight category.
• Mortgage & Loan Calculator. Monthly payment, taxes, insurance, PMI, and amortization schedule.
• Tip Calculator. Work out a tip and split the bill between any number of people.
• GPA Calculator. Weighted grade point average on the standard 4.0 scale.
• Salary Calculator. Convert pay between hourly, weekly, monthly, and annual, plus a take-home estimate.
• Calorie Calculator, BMR and daily calorie needs (TDEE) via the Mifflin-St Jeor equation.
• Compound Interest Calculator. Project savings growth with regular contributions.
• Discount Calculator. Sale price from a discount percentage, or the reverse.
• Sales Tax & VAT Calculator. Add tax to a price, or extract it from a tax-inclusive total.
• Pregnancy Due Date Calculator. Estimated due date from your last period or conception date.
• Triangle Calculator. Every side, angle, area, and more from any 3 known sides or angles.

Converters

• Unit Converter. Length, weight, volume, and temperature, metric and imperial.
• Currency Converter, 30+ world currencies with live, daily-updated exchange rates.
• Binary, Hex & Decimal Converter. Number base conversion, plus text to/from binary or hex.
• CSV ↔ JSON ↔ Markdown. Convert between table formats with a sortable live preview.
• Unix Timestamp Converter. Timestamp to local time, UTC, or any timezone, and back.

Date & Time

• Date Calculator. Exact age, or the number of days between two dates.
• Countdown Timer. Live days/hours/minutes/seconds countdown to any date.
• Pomodoro Timer. Focused work intervals with scheduled breaks and session tracking.

Text & Writing

• Word Counter. Words, characters, sentences, paragraphs, and reading time.
• Text Diff Checker. Compare two blocks of text and see exactly what changed.
• Lorem Ipsum Generator. Placeholder text by words, sentences, or paragraphs.
• Text Case Converter, UPPERCASE, camelCase, snake_case, and five more.
• Typing Speed Test. Words per minute with live accuracy tracking.

Developer Tools

• JSON Formatter & Validator. Format, minify, and validate JSON with exact error locations.
• Regex Tester. Live match highlighting and capture-group breakdown.
• Base64 & URL Encoder/Decoder. Encode or decode text, both directions, Unicode-safe.
• Hash Generator, MD5, SHA-1, SHA-256, and SHA-512 digests of any text.

Generators

• QR Code Generator. Any link or text into a scannable QR code, PNG or SVG.
• Random Generator. Dice, coin flips, random numbers, and a list picker/shuffler.
• Multiplication Table Generator. A single number's times table, or a full grid.

Puzzles

• Sudoku Solver. Solve any 4×4, 9×9, or 16×16 puzzle instantly, or reveal one more number.

Security & Privacy

• Password Generator. A strong random password or a memorable passphrase.
• Password Strength Checker. Entropy and an estimated crack time.

Media

• Image Compressor. Compress and resize a photo, nothing ever uploaded.
• Screen & Webcam Recorder. Record your screen or webcam and download the video.

Design

• Color & Contrast Checker. Pick and convert colors, check WCAG contrast ratio.

Laborilo is supported by ads shown alongside each tool, which keeps everything free to use with no limits. New tools are added regularly. See the full set on the homepage, or read the guides behind how they work.