Decimal to Base36 Converter
Convert any decimal integer to base-36 (digits 0-9 and letters A-Z) instantly in your browser.
Input
Supports negative integers and very large numbers.
Letters are case-insensitive. Allowed characters: 0-9, A-Z.
Result
Enter a value and click Convert.
Base-36
Conversion steps
Copied!
Summary
Convert any decimal integer to base-36 (digits 0-9 and letters A-Z) instantly in your browser.
How it works
- Enter a decimal (base-10) integer in the input field.
- The tool repeatedly divides the number by 36, mapping remainders to 0-9 or A-Z.
- The remainders are collected in reverse order to form the base-36 string.
- For reverse conversion, enter a base-36 string to get back the decimal value.
- Copy the result with the Copy button.
Use cases
- Generate short alphanumeric tokens from sequential numeric IDs.
- Encode large integers compactly for URLs and QR codes.
- Understand positional numeral systems beyond base-10 and base-16.
- Convert Unix timestamps to compact base-36 strings for unique keys.
- Reverse-decode a base-36 identifier back to its original numeric value.
- Educational demonstration of radix conversion algorithms.
Frequently Asked Questions
Last updated: 2026-05-23 ·
Reviewed by Nham Vu