JSON formatter & validator
Validate, format or minify JSON.
Open toolNumber base converter
Convert integers between binary, decimal and hex.
Your input stays in this browser. No account needed.
THE QUICK GUIDE
How to use number base converter
Enter the labelled values, then process it. Copy or download the result.
How it works
Parses and converts arbitrary-size integers using BigInt; letters represent digits above 9.
A useful example
Integer: 255; Input base (2–36): 10; Output base (2–36): 16 → FF
Good to know
Input stays in your browser. Text input is limited to 200,000 characters. CSV cells containing formulas should be reviewed before opening in spreadsheet software.