Compact 0-9A-Za-z Base62 encode & decode, ideal for short IDs and URLs. Base62 Encoder / Decoder is a free online tool from the ToolsRift Encoders & Decoders collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Choose Encode or Decode and enter your text. Encoding treats the UTF-8 bytes as one big number rendered in Base62; decoding reverses it back to the original text.
Base62 avoids the +, / and = characters, so its output is fully alphanumeric and safe to drop into URLs, filenames and IDs without escaping.
Each leading zero byte is preserved as a leading '0' character so byte-exact round-trips work.
URL shorteners, short unique IDs, and anywhere a compact human-typable token is needed.