Integer Base Converter

• Convert integers between any bases from 2 to 64 (the character set 0-9, A-Z, a-z, + and / covers up to base 64).
• Three ready-made groups: Common (binary, octal, decimal, hexadecimal), Developer (base-32, base-64) and Extended (base-3, 4, 5, 6, 7, 9, 12) for different needs.
• Type a value into any base field and every other base is converted automatically in real time — no source/target selection needed.
• Input validation: each base only accepts its valid characters, and invalid input is flagged instantly to prevent wrong results.
• A copy button sits next to each base to copy that value with one click; a Reset button clears everything at once.
• All calculations run locally in your browser with no data upload, so it works offline.

1. Open the tool page — no download or installation required.
2. Type a number into any base field (for example, enter 255 in Decimal).
3. All other bases update instantly; click the copy button beside a base to copy it, or click Reset to clear everything.

• The tool is completely free and requires no sign-up.
• Everything is processed locally in your browser — your data never leaves your device.
• Each base has its own valid character set (e.g. binary uses only 0/1, hexadecimal uses 0-9 and A-F); please follow the on-screen hints.

Free online integer base conversion tool, supports mutual conversion between bases 2-64 including binary, octal, decimal, hexadecimal, etc. Enter a value in any base, and other bases will be automatically calculated. Suitable for programming development, mathematical calculations and other scenarios.

Open the tool page — no download or installation required. Type a number into any base field (for example, enter 255 in Decimal). All other bases update instantly; click the copy button beside a base to copy it, or click Reset to clear everything.

The tool is completely free and requires no sign-up. Everything is processed locally in your browser — your data never leaves your device. Each base has its own valid character set (e.g. binary uses only 0/1, hexadecimal uses 0-9 and A-F); please follow the on-screen hints.

Yes, Integer Base Converter is completely free. No download or installation required — it runs right in your browser.