Number Base Converter
Convert a number between binary, octal, decimal, and hexadecimal — enter a value, choose its base, copy any result.
Arbitrary-precision: even a 256-bit hash converts exactly. Accepts 0x/0b/0o prefixes, a leading -, and _ grouping.
Runs in your browser. Your input is not uploaded to PayloadIQ.
Enter a number and tell the converter what base it's in — binary (2), octal (8), decimal (10), or hexadecimal (16) — and it shows the value in all four, with a copy button on each. A leading 0x on hex input is accepted.
Input is validated against the chosen base, and very large values (beyond the JavaScript safe-integer range) are flagged rather than rounded silently. Runs entirely in your browser.