justyourcalculatorBase64 Encode and Decode
Convert text or files to Base64 and back, instantly.
- 100% Free
- Instant Results
- No Sign Up
Base64 Encode Decode
Encode text or files to Base64 and decode it back
More Other Calculators
View all calculators- URL Encode DecodePercent-encode text for URLs and decode it back
- Password GeneratorStrong random passwords, made on your device
- Binary CalculatorBinary math and binary to decimal conversion
- Hex CalculatorHexadecimal math and hex to decimal conversion
- Age CalculatorExact age in years, months, days and more
- Date CalculatorDays between dates, or add and subtract days
- Time CalculatorAdd or subtract days, hours, minutes, seconds
- Hours CalculatorHours and minutes between two times
- GPA CalculatorSemester and cumulative GPA on a 4.0 scale
- Calculators
- 204+
- Free to use
- 100%
- Results as you type
- Instant
How the base64 encode decode calculator works
Base64 turns bytes into 64 safe text characters (A-Z, a-z, 0-9, + and /), 6 bits per character, so every 3 bytes become 4 characters. It's used to put binary data into email, JSON, data URLs and HTTP headers. It is an encoding, not encryption.
Text is first converted to UTF-8 bytes, so accents, emoji and non-Latin scripts round-trip correctly. The URL-safe variant (RFC 4648) swaps + and / for - and _ and usually drops the = padding.
Using and checking your result
Published by JustYourCalculator. Check the units and assumptions above, and compare a known example before relying on the output. Calculations use browser arithmetic and may round displayed values.
Share links may contain your input values. Anyone with the URL can read them; avoid sharing sensitive personal or financial information.