Hex to Decimal Converter

Paste one or more hexadecimal values and get their exact decimal equivalents instantly, with support for batches of many values at once.

What is the Hex to Decimal Converter?

The Hex to Decimal Converter reads hexadecimal numbers — the base-16 system programmers use for memory addresses, color codes and byte values — and converts each one to a standard base-10 decimal number. An optional 0x prefix is accepted and stripped automatically, so you can paste values straight out of source code or a debugger.

How It Works

Each value you enter is validated against the hex character set (0-9 and A-F), then parsed as a base-16 big integer and converted to its decimal string form. Because the conversion uses arbitrary-precision arithmetic, even very long hex strings convert accurately without the rounding errors a 32-bit calculator would introduce.

Real-World Use Case

Developers reading a hex dump, a color value like 2A3F4B, or a memory address from a crash log often need the plain decimal number to make sense of it — pasting a batch of values here converts them all in one pass instead of looking each one up individually.

Frequently Asked Questions

Can I convert more than one value at a time?

Yes. Enter each hex value on its own line or separate them with spaces, and every value is converted and listed in the same order in the result box.

Do I need to include the 0x prefix?

No. The converter accepts values with or without a leading 0x or 0X, so 2A3F and 0x2A3F both convert to the same decimal number.

What happens if I enter an invalid hex value?

That entry is flagged with an inline error message listing which value failed, and it's marked directly in the result list, so a typo doesn't silently produce a wrong or missing answer.

Once you have the decimal figure, you can head the other way to double-check the round trip. Looking for the reverse? Try the Decimal to Hex Converter →