Free online tools for business, developers, creators, and everyday tasks
Toolify is a fast, growing collection of simple utilities that run right in your browser. No accounts, no uploads — your data never leaves your device.
Popular tools
Handy utilities people reach for every day.
Profit Margin Calculator
Calculate gross profit and profit margin from cost and revenue.
Open tool →ROI Calculator
Calculate return on investment as a percentage and net gain.
Open tool →Percentage Calculator
Solve percentages: X% of Y, what percent, and percent change.
Open tool →JSON Formatter
Beautify and minify JSON with adjustable indentation.
Open tool →UUID Generator
Generate random version 4 UUIDs individually or in bulk.
Open tool →JWT Decoder
Decode a JWT's header and payload without a server.
Open tool →Browse by category
Everything is organized so you can find the right tool fast.
Business
5 tools
Margins, markups, ROI, and everyday money math.
Developer
9 tools
Encoders, formatters, generators, and converters.
Text
6 tools
Count, transform, clean, and compare text.
SEO
5 tools
Slugs, meta tags, robots.txt, and structured data.
Productivity
1 tool
Small utilities that save you time every day.
File & Data
1 tool
Convert and transform common data formats.
Runs in your browser
Tools work entirely client-side, so results are instant and your data stays private.
No sign-up required
Every tool is free to use immediately — no account, no paywall, no friction.
Built to grow
A clean, consistent library that keeps expanding with genuinely useful tools.