Developer

Base64 Encoder

Encode plain text into Base64 for transport, embedding, or debugging workflows.

Last reviewed: April 30, 2026Free toolMethodology

Base64 Encoder

Paste the raw string you want to convert.

These fields start with sample inputs. Keep them or replace them, then run the tool to show a fresh result.

Output

Calculating the sample result.

Why it matters

Base64 encoding is common in API payloads, credentials, email systems, and binary-to-text transport layers.

When to use

  • Preparing data for headers or payloads
  • Testing integrations that expect Base64 input
  • Debugging encoded strings from logs or docs

Inputs & Outputs

Inputs

  • Input text is the raw string you want to convert into Base64.

Outputs

  • Encoded output shows the Base64 version of the original text.
  • Character count helps estimate payload size changes after encoding.

Encoding method

The tool converts the input string into UTF-8 bytes and then maps those bytes into the Base64 alphabet.

Base64 is a binary-to-text encoding, not an encryption method

Worked example

1

API testing

A developer needs to encode a small JSON blob before sending it through a header or fixture.

Inputs

  • Input text: {"env":"prod","region":"eu"}

Steps

  • Convert the UTF-8 bytes into Base64 output

Result

  • The result can be copied directly into another tool or request builder.

Edge cases & caveats

  • Base64 does not hide or secure the underlying content.
  • Encoded output can become larger than the original input.

Frequently Asked Questions

Is Base64 secure?

No. It only changes representation. Anyone can decode it back to the original text.

Can this handle Unicode text?

Yes. The tool encodes UTF-8 input rather than assuming plain ASCII only.

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