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Base62 encoder/decoder
Encoding
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About this tool
Convert UTF-8 text using the 0–9, A–Z, a–z Base62 alphabet.
Common uses
- Convert UTF-8 text using the 0–9, A–Z, a–z Base62 alphabet.
- Encode text as Base62 digits in the exact order 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.
How to use it
- 1.Encode text as Base62 digits in the exact order 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz.
- 2.Decode using the same alphabet; leading 0 characters preserve leading zero bytes.
Worked example
Input and result
A
13
Uses digits, uppercase letters, then lowercase letters.
Limits and notes
- Base62 alphabets vary. Encoding accepts up to 2048 UTF-8 bytes and decoding up to 4096 characters. Encoded whitespace is ignored, content BOM is preserved, and invalid characters or UTF-8 fail.
Frequently asked questions
What does this tool do?
Convert UTF-8 text using the 0–9, A–Z, a–z Base62 alphabet.
What should I check before using the result?
Base62 alphabets vary. Encoding accepts up to 2048 UTF-8 bytes and decoding up to 4096 characters. Encoded whitespace is ignored, content BOM is preserved, and invalid characters or UTF-8 fail.