D DevKit

Number Base Converter — Bin · Oct · Dec · Hex

Convert between binary, octal, decimal and hexadecimal — instantly.

100% client-side No upload Free · no signup

What is Number Base?

Number Base Converter translates a value between binary (2), octal (8), decimal (10) and hexadecimal (16) — the four bases you meet every day.

How to use

  1. Type a value into any of the four fields.
  2. The other three update in sync.
  3. Copy whichever you need.

Frequently asked questions

How large can the value be?

It uses BigInt, so arbitrary-precision integers are supported.

Are negative numbers supported?

Yes — a leading minus sign is preserved.