All tools
124 free tools in 13 categories. No sign-up, no uploads: everything runs in your browser.
Math & finance
- Percentage calculator
- Loan calculator
- Compound interest calculator
- Discount calculator
- Tip calculator
- VAT calculator
- Mortgage calculator
- ROI calculator
- Margin and markup calculator
- Salary converter
- Fraction calculator
- Average calculator
- Ratio calculator
- Random number generator
- Credit card payoff calculator
- Break-even calculator
- Inflation calculator
- Retirement calculator
- Simple interest calculator
- Scientific calculator
- GCD and LCM calculator
- Prime number checker
- Savings goal calculator
Developer tools
- JSON formatter
- Base64 encoder / decoder
- URL encoder / decoder
- UUID generator
- Hash generator
- Password generator
- JWT decoder
- Regex tester
- Cron expression helper
- CSV to JSON
- IP subnet calculator
- YAML to JSON
- CSS minifier
- HTML entity encoder
- Markdown to HTML
- SQL formatter
- JSON to TypeScript
- chmod calculator
- HTTP status codes