Free online tools that run in your browser
Free online tools that run entirely in your browser. No signup, no uploads, no limits — just fast, focused utilities that do one job well.
Latest tools
- 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.