Developer Tools
Encode text to Base64 instantly for APIs, headers, testing, data transfer, and debugging.
Use this free Base64 Encoder to convert plain text into Base64 instantly. It is useful when working with API payloads, authentication headers, test strings, encoded data transfer, JSON fields, and developer debugging tasks. Paste readable text and get a Base64-encoded result that is easy to copy into scripts, requests, configs, or tools that expect encoded input.
Use this free Base64 Encoder to convert plain text into Base64 instantly. It is useful when working with API payloads, authentication headers, test strings, encoded data transfer, JSON fields, and developer debugging tasks. Paste readable text and get a Base64-encoded result that is easy to copy into scripts, requests, configs, or tools that expect encoded input.
Use base64 encoder when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
If this tool runs fully in the browser, your input stays on the client side instead of being uploaded to a server. That makes it useful for quick encoding of copied text, API values, config strings, and test payloads when you want a fast local result.
Base64 Encoder converts readable text into Base64 output. Base64 Decoder does the reverse and converts a Base64 string back into readable text. If you start with normal text, encode it. If you start with an encoded string, decode it.
Base64 Encoder turns text into Base64 data. URL Encoder escapes characters so they are safe inside URLs and query strings. If your goal is a link-safe value, URL encoding is usually the right choice. If your system explicitly expects Base64, use Base64 encoding instead.
After generating an encoded value, you can verify it with Base64 Decoder. If your task is URL-safe escaping rather than Base64 conversion, use URL Encoder. If you are encoding JSON text before testing a payload, you may also want JSON Formatter.
Read step-by-step usage guidance, best practices, and common mistakes.
See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
Find similar and supporting tools for adjacent actions and follow-up tasks.
Input
Hello
Output
SGVsbG8=
A basic text string becomes a Base64-encoded value.
Input
hello world
Output
aGVsbG8gd29ybGQ=
Spaces and regular text characters are preserved through encoding.
Input
{"name":"John","role":"admin"} Output
eyJuYW1lIjoiSm9obiIsInJvbGUiOiJhZG1pbiJ9
Useful when you need to place JSON text into an encoded field or test payload.
Input
user:password123
Output
dXNlcjpwYXNzd29yZDEyMw==
Helpful for understanding how raw credential pairs look before being used in Basic Auth scenarios.
Input
https://example.com?a=1&b=2
Output
aHR0cHM6Ly9leGFtcGxlLmNvbT9hPTEmYj0y
Useful when encoding raw URL text as data, not for normal URL escaping.
Input
line one line two
Output
bGluZSBvbmUKbGluZSB0d28=
Line breaks are preserved in the encoded output.
Input
Привет
Output
0J/RgNC40LLQtdGC
Useful when checking how non-Latin text is converted to Base64.
Input
{"event":"payment.succeeded","amount":4999} Output
eyJldmVudCI6InBheW1lbnQuc3VjY2VlZGVkIiwiYW1vdW50Ijo0OTk5fQ==
Helpful for test fixtures, encoded request bodies, and integration debugging.
Fix: Use URL Encoder for query strings and URLs, and Base64 Encoder only when a system expects Base64 data.
Fix: Remember that Base64 is only encoding, not protection or secrecy.
Fix: Check the input first and decode it before re-encoding if needed.
Fix: Clean the input text before encoding if exact output matters.
Fix: Use the Base64 Decoder page for standard Base64 values and Base64 URL tools for URL-safe variants.
A Base64 encoder converts text or data into a Base64 string format that can be transmitted or stored in text-based systems.
No. Base64 is encoding, not encryption. It makes data representable as text, but it does not secure it.
Base64 Encoder converts plain text into Base64, while Base64 Decoder converts Base64 text back into readable text.
Use Base64 when a tool, API, config, or protocol expects encoded text rather than raw plain text.
Differences can happen because of character encoding, hidden spaces, line breaks, or URL-safe Base64 variants.
Yes. JSON text can be encoded as Base64 just like any other string.
Yes. Unicode text can be encoded, which is useful for testing international strings and payloads.
Only if the target system specifically expects Base64. For regular links and query parameters, use URL Encoder instead.
Standard Base64 uses characters like + and /, while Base64 URL uses URL-safe replacements such as - and _.
Use the decoder when you want to verify that the encoded value round-trips back to the original text correctly.