Base64 Encode / Decode

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Text • encode/decode

Input

0 chars

Output

0 chars

How to Use the Base64 Encode / Decode

Pick a direction — use the toggle at the top (e.g. encode vs decode).
Type or paste your text — the result updates live as you type; large inputs are fine.
Copy the result — one click copies the output to your clipboard.
Swap — flip the direction (⇄) to reverse the conversion instantly.

Why Use This Base64 Encode / Decode

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Accurate Standards

Built on internationally recognised SI and standards-body conversion factors for dependable results.

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Instant & Animated

Results update live as you type, with a clear visual breakdown across every unit at once.

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100% Private

Everything runs in your browser — no account, no uploads, nothing leaves your device.

Understanding the Base64 Encode / Decode

Base64 is an encoding scheme that represents binary data using 64 printable ASCII characters (A–Z, a–z, 0–9, + and /). It was designed so binary content — images, files, keys — can travel safely through systems built for text, such as email (MIME), JSON payloads, HTML data URIs and HTTP headers. Base64 is encoding for safe transport, not encryption, so it adds no security on its own.

Developers across the US reach for Base64 every day: embedding small images in CSS/HTML, encoding API tokens and Basic-Auth credentials, storing binary blobs inside JSON, and inspecting JWTs. This converter encodes and decodes instantly with full UTF-8 support, entirely in your browser — paste, read, copy. Nothing is uploaded, so it is safe for tokens and private data.

Base64 Encode / Decode FAQ

What is Base64? ▾

Base64 represents binary data using 64 ASCII characters so it can travel safely through text-only systems like email, JSON and data URLs. It is encoding, not encryption.

Is my data sent anywhere? ▾

No. Encoding and decoding happen entirely in your browser — nothing is uploaded.