Base36 Converter

About This Tool

Base36 Converter is an online tool that encodes text to Base36 format and decodes Base36 strings back to plain text using digits 0-9 and letters a-z. It leverages BigInt arithmetic for handling arbitrarily large inputs and provides one-click mode switching with sample data. All processing happens locally in your browser with no data sent to any server.

Key Features

• Bidirectional Base36 encoding and decoding using 0-9 and a-z alphabet
• BigInt-powered arithmetic for handling arbitrarily large inputs
• One-click mode switching between encode and decode
• Side-by-side input and output panels for easy comparison
• Built-in sample data to quickly test encoding and decoding
• Clear status feedback with success and error messages

Quick Preview

Use Cases

• Generate compact, case-insensitive identifiers for short URLs
• Encode database primary keys into shorter, human-readable strings
• Decode Base36 identifiers from APIs and legacy systems
• Create shareable reference codes from numeric values
• Debug Base36 encoded data during application development