Technology
URL encode and decode
Percent-encode text for use in a URL component or decode it.
Calculators / Technology / Base64 encode and decode
Base64 encode and decode calculator
Encode plain text as Base64 or decode valid Base64 text.
On this page
Base64TXlDYWxjdXRl
Calculator controls
How to calculate
Encode plain text as Base64 or decode valid Base64 text.
Base64 represents bytes with a 64-character alphabet; decoding reverses that representation.
Worked example
Action: encode; Text: MyCalCute.
Base64: TXlDYWxjdXRl .
Assumptions and limits
Base64 is encoding, not encryption. Do not paste secrets into an untrusted website. Unicode text is encoded as UTF-8.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Encode plain text as Base64 or decode valid Base64 text. The displayed figures use the inputs and formula shown on this page.
When this tool is useful
Use the base64 encode and decode to compare a scenario, check an estimate, or verify a manual calculation.
Understanding your inputs
| Input | What to enter |
|---|---|
| Action | Enter one of the available options. |
| Text | Enter the value in the format shown. |
Frequently asked questions
What should I check before using the base64 encode and decode result?
Base64 is encoding, not encryption. Do not paste secrets into an untrusted website. Unicode text is encoded as UTF-8.
Is this base64 encode and decode result exact?
It is exact for the stated mathematical model and entered values. Real-world results can differ when rates, timing, fees, definitions or measurement conditions differ.