Octal to Hexadecimal Converter
Free online octal to hexadecimal converter with steps — instant, accurate octal to hexadecimal conversion in your browser.
Supports arbitrarily large non-negative integers (BigInt under the hood).
About octal to hexadecimal conversion
Number bases are just different ways of writing the same value: binary (base 2) uses digits 0–1, octal (base 8) uses 0–7, decimal (base 10) uses 0–9 and hexadecimal (base 16) uses 0–9 plus A–F. This converter parses your input as an arbitrary-precision integer and re-renders it in the target base — instantly and privately, in your browser.
Quick reference
1010in binary =12in octal =10in decimal =Ain hexadecimal- Hexadecimal digits:
A=10, B=11, C=12, D=13, E=14, F=15 - Each octal digit maps to exactly 3 binary digits; each hex digit maps to exactly 4
Frequently asked questions
How do I convert octal to hexadecimal manually?
Convert via binary: expand the octal digits to bits, then regroup the bits for hexadecimal. Or just type the number above — the tool does it instantly.
What is octal 755 in hexadecimal?
755 in octal equals 1ED in hexadecimal.
Is this converter free and private?
Yes — free, no sign-up, and the conversion runs locally in your browser using arbitrary-precision integers. Nothing is uploaded.