Utilities
Free Online Binary, Decimal, Hex & Octal Converter
Convert integer values between common number bases with validation and optional prefixes.
100% Client-Side. Your data is processed locally and is never sent to an ElDevo processing server.
Input
Output
Ctrl/Cmd + Enter to run · Esc to clear · Processing stays in your browser.
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How to Use
- 1Choose the source base.
- 2Enter an integer.
- 3Select the target bases.
- 4Copy the converted values.
Features & Privacy Guarantee
- ✓ Binary / octal / decimal / hex
- ✓ Prefix detection
- ✓ Large integer support with BigInt
- ✓ Instant conversion
Search intent: Convert integers between binary, decimal, hexadecimal and octal.
Technical Example
Input
255
Output
BIN 11111111 OCT 377 HEX FF
Frequently Asked Questions
Does it support hexadecimal?
Yes. Binary, octal, decimal and hexadecimal are supported.
Can it handle large integers?
Yes. The implementation uses BigInt where supported.
Are fractions supported?
This tool focuses on integer conversion.
Is conversion local?
Yes.