Convert text to Base64 or decode Base64 to text — instantly, securely, and completely free. This fast and accurate Base64 converter lets you encode or decode any text, emoji, or Unicode data right in your browser. No signup, no ads, no tracking — just clean, client-side processing.
Convert plain text, JSON, or any UTF-8 data into Base64 encoding.
Decode Base64 strings back to readable text instantly.
Use - and _ instead of + and / for web URLs
Remove trailing = signs from output
Keep whitespace for better readability
Check whether pasted Base64 is valid before decoding
Base64 is a text-based representation of binary data. It converts any data — text, files, or symbols — into a set of 64 printable characters (A-Z, a-z, 0-9, +, /) with = used for padding.
This makes it ideal for:
Example:
When Base64 data is used in URLs or API endpoints, + and / may break query strings. URL-safe Base64 replaces them with:
This variant removes padding and is widely used in web tokens (JWTs) and REST APIs.
Representing binary data as text for HTTP, email, APIs.
No, it's encoding, not encryption.
Paste your Base64 string above and click Decode.
Yes, by converting them to data URIs first.
Yes, full UTF-8 encoding is supported.
Paste any text, JSON, or Unicode string below and see the instant Base64 result.
Features:
Our free Base64 encoder/decoder is the perfect tool for developers, data analysts, and anyone working with text encoding. Whether you're encoding data for transmission, storing binary data in text formats, or working with web APIs, our tool makes it easy to convert between text and Base64 encoding.
Key features of our Base64 encoder/decoder include: instant conversion between text and Base64, support for all international characters and languages, URL-safe encoding variants, input validation and error handling, real-time statistics and size estimates, sample texts for testing, and completely free to use with no registration required.
A Base64 encoder/decoder is an online tool that converts text to Base64 encoding and vice versa. Base64 uses 64 characters (A-Z, a-z, 0-9, +, /) to represent binary data as text, making it safe for transmission over text-based protocols.
This makes the tool useful for developers, data analysts, and anyone working with text encoding and data transmission.
Base64 uses 64 characters to represent binary data:
(= is used for padding, not part of the alphabet)
By understanding these characters, you can recognize Base64 data and work with it effectively.
Base64 encoding is used in many ways today:
That explains why searches for "Base64 encoder online" are growing rapidly—developers need reliable tools for data encoding.
A Base64 decoder does the reverse: instead of encoding text to Base64, it reads Base64 strings and converts them back to plain text.
This feature is useful if you come across Base64 data in web pages, APIs, or configuration files and want to understand it quickly.
URL-safe Base64 uses - and _ instead of + and / to avoid issues with URL encoding. This variant is commonly used in web URLs and API endpoints.
Adding URL-safe encoding makes Base64 data safe for use in web URLs and API endpoints.
Simply paste the Base64 string into the decoder input field, and it will decode it instantly into readable text. You can use our tool to decode any valid Base64 string.
Yes, absolutely! Our Base64 encoder/decoder is completely free to use. There are no hidden fees, registration requirements, or usage limits. You can use it as much as you want, whenever you want.
This tool currently supports text-based input and output. For images, you would need to first convert the image to a text representation (like a data URL) before encoding to Base64.
"Hello World" in Base64 is: SGVsbG8gV29ybGQh
Base64 is used because it converts binary data into text that can be safely transmitted over text-based protocols like email, HTTP, and JSON. It ensures data integrity across different systems and protocols.
Our encoder supports all languages and character sets. Base64 can represent any text, including accented characters, emojis, and Unicode symbols. The tool works with English, Spanish, French, German, and many other languages.
Our encoder/decoder uses the standard Base64 algorithm and is highly accurate. It properly handles UTF-8 text encoding, preserves all characters correctly, and includes proper padding and validation.
This Base64 Encoder/Decoder Online is designed for developers and data analysts alike. Type your text, JSON data, or any string, and see how it looks in Base64. With one click, you can:
Fast, simple, and always free.
Gratis onlineverktyg för att konvertera, koda och omvandla text
