How does a hex number become decimal?

Each digit is multiplied by a power of sixteen from right to left, with a through f worth 10 to 15, so ff equals 15×16 + 15 = 255.

Do 0x prefixes and uppercase digits work?

Yes. 0xFF, FF, and ff all convert to 255; prefixes are stripped and digits are normalized before conversion.

Can I convert a list of hex values at once?

Yes. Paste one value per line and each line converts in order, which speeds up log analysis and datasheet checks.

Hex to Decimal Converter

Convert hexadecimal numbers into decimal instantly. Paste one value per line for batch conversion, use 0x prefixes and any letter case freely, and convert long values with exact arbitrary-precision math. Everything runs locally in your browser.

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Hex to Decimal Converter

Hex numbers (one per line)

Decimal output

Popular Number Tools

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Hex numbers (one per line)

Decimal output