IT & Developers
Base64 Encoder/Decoder
Encode and decode Base64 strings
Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-13
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Region
Loading calculator...
Frequently asked questions
What does the Base64 Encoder/Decoder do?
It helps you encode and decode Base64 strings.
What inputs do I need?
Enter Mode.
Are decimals supported?
Yes, you can use decimal values where appropriate.
Related tools
About this tool
Use this Base64 Encoder/Decoder to convert a value quickly and consistently. Provide Mode and it returns Result.
If you are comparing results across tools, keep the same units and the same level of precision. The displayed value may be rounded, so copy more decimal places when you need a tighter match.