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Base58, Base62 and Base91 Converter

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Pick a base and a direction, paste your text, and copy the encoded or decoded result.

Setup
Input, options, and run action

Encode Configuration

Provide input, choose mode options, then run encode.
Ready
Advanced Options
Swap
To share your settings, paste this link in an email, web page, or on social media
Result
Output, validation, and metadata

Conversion Review

Run conversion to inspect output, warnings, and diagnostics.
Before/After Diff
Diff appears here after conversion.
Structured Analysis
Structured analysis appears here after conversion.
Recent History
History appears here after conversion.
Validation checks appear here after conversion.
Diagnostics appear here after conversion.

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Related tools

Base91 Decoder Base62 Encoder

Encode and decode Base58, Base62 and Base91

Base58 drops look-alike characters and is used for Bitcoin addresses and short IDs. Base62 uses only letters and digits, so it is safe in URLs. Base91 packs data more densely than Base64. Pick the base and direction, then paste your text; everything runs in your browser.

Java is to JavaScript what car is to Carpet.

Chris Heilmann

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