Base Converter

A FREE, Multi-language, offline app.

Base Converter is a clean, fast, and fully offline tool for converting numbers between binary, octal, decimal, hexadecimal, and any custom base from 2 to 36 - completely free, with no ads.

Type a value and watch every base update instantly. Our app is powered by arbitrary-precision math. This it can handle huge numbers and fractions with adjustable decimal precision - no rounding surprises. Flip individual bits with the interactive bit editor, group digits for readability, copy any result with one tap, and keep a history of your conversions.

Built for students, developers, and engineers:

Features

- Binary, octal, decimal, hex + custom base 2-36
- Arbitrary-precision integers and fractions
- Interactive tap-to-flip bit editor with bit/byte counts
- Bitwise calculator (AND, OR, XOR, NOT, shifts)
- Text-to-Codes encoder
- Digit grouping & uppercase toggle
- One-tap copy and saved history
- Beautiful light & dark themes

Free. No internet required.