XXH3 Calculator

What is XXH3?

XXH3 is the modern xxHash algorithm family member that produces a 64-bit digest. It is generally preferred for new non-cryptographic hashing because it is fast on a wide range of inputs and platforms. Use XXH128 when you need a 128-bit XXH3 digest.

How to calculate XXH3

Enter text, upload a file, or provide a URL. Optionally set a 64-bit seed, choose Hex or Base64 output, then click Hash. File and URL modes hash raw bytes; text mode uses the selected input encoding.

Seed

Seed is a hexadecimal value of up to 16 digits (0000000000000000–FFFFFFFFFFFFFFFF). Leave it at 0 unless a protocol or API specifies another value. Enter hex digits only, without a 0x prefix.

Result example

UTF-8 abc with seed 0 produces 78af5f94892f3950.

Related calculators

• XXHash for all variants on one page
• XXH32, XXH64, XXH128