API Key Generator
Generate secure, random API keys in multiple formats.
Key length (chars)
Prefix (optional)
Format
Count
Formula / How it works
API keys are randomly generated strings used to authenticate requests. Hex format: uses 0-9 and a-f (128-bit entropy for 32 chars) Alphanumeric: uses A-Z, a-z, 0-9 (190-bit entropy) Base64: includes +/ for maximum entropy