IT & Developers
HTML Encoder/Decoder
Encode and decode HTML entities
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.
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Frequently asked questions
What does the HTML Encoder/Decoder do?
It helps you encode and decode HTML entities.
What inputs do I need?
Enter Mode.
Are decimals supported?
Yes, you can use decimal values where appropriate.
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About this tool
Use this HTML Encoder/Decoder to convert a value quickly and consistently. Provide Mode and it returns Output.
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.