All tools
Browse every free online tool on the site. Each one runs entirely in your browser, needs no signup, and does a single job well.
- Developer Tools
Base64 Encoder & Decoder
Encode text to Base64 and decode it back, right in your browser. Handles Unicode correctly and never sends your data anywhere.
- Text Tools
Case Converter
Convert text between upper case, lower case, title case, sentence case, camelCase, snake_case and kebab-case, all at once.
- Converters
Color Converter
Convert colors between HEX, RGB, HSL and OKLCH. Pick a color or paste any format, and see every equivalent at once.
- Finance Calculators
Compound Interest Calculator
See what savings grow to with compound interest and regular contributions. Splits the result into what you paid in and what the interest added.
- Converters
CSV to JSON Converter
Turn CSV into JSON in your browser. Handles quoted fields, embedded commas and line breaks, with a choice of delimiter and header row.
- Text Tools
Find and Replace
Replace text across a whole document in your browser. Plain search or regular expressions, with a live count of how many matches were changed.
- Developer Tools
HTML Entity Encoder
Encode text into HTML entities or decode entities back to characters. Escapes the five characters that break markup, safely in your browser.
- Developer Tools
JSON Formatter
Format, validate and minify JSON in your browser. Paste messy JSON, get readable output with a clear message when something is wrong.
- Developer Tools
JWT Decoder
Decode a JSON Web Token to inspect its header and payload, and check the expiry — all in your browser, with no token ever sent.
- Finance Calculators
Loan Calculator
Work out the monthly payment on a loan or mortgage, plus the total interest over its life. Adjust the term to see what it really costs.
- Text Tools
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences or words. Classic lorem ipsum, ready to paste into a mockup or a layout.
- Converters
Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36. Arbitrary precision, so large values stay exact.
- Developer Tools
Password Generator
Generate strong random passwords in your browser. Choose the length and character types, then copy — nothing is ever sent over the network.
- Finance Calculators
Percentage Calculator
Work out percentages three ways: a percent of a number, what percent one number is of another, and percentage increase or decrease.
- Developer Tools
SHA Hash Generator
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text, computed in your browser with the built-in Web Crypto API.
- Text Tools
Slug Generator
Turn any title into a clean URL slug. Strips accents and punctuation, optionally drops stop words, and joins the rest with hyphens.
- Text Tools
Text Line Sorter
Sort lines alphabetically or by length, reverse them, and strip duplicates or blank lines — all at once, in your browser.
- Finance Calculators
Tip Calculator
Work out a tip and split the bill between any number of people. Shows the tip, the total and what each person owes, rounded sensibly.
- Converters
Unix Timestamp Converter
Convert Unix timestamps to readable dates and back. Handles seconds and milliseconds, your local time zone and UTC, live as you type.
- Developer Tools
URL Encoder & Decoder
Encode text for safe use in URLs and decode percent-encoded strings back. Handles full URLs and individual query components.
- Developer Tools
UUID Generator
Generate random UUID v4 identifiers instantly in your browser. Create one or thousands at once, then copy them with a single click.
- Text Tools
Word & Character Counter
Count words, characters, sentences and paragraphs as you type. Includes reading time, and your text never leaves your browser.