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Your Base64 data stays in your browser. Client-side only

Base64 Encoder & Decoder

All-in-one dual converter. Switch instantly between Base64 decoding and encoding or convert both directions side by side.

DECODER

Base64 → Text

Live UTF-8
32 chars · 32 bytes
24 chars · 24 bytes
UTF-8 decoded 24 UTF-8 bytes
ENCODER

Text → Base64

Standard & URL-safe
27 chars · 27 UTF-8 bytes
36 chars
Format: Standard Base64Size overhead: ~133% of raw text (+33% standard)

Bidirectional Base64 Conversion

Developers frequently need to both inspect incoming Base64 strings and generate new Base64 payloads during debugging. Rather than navigating between separate tools or tabs, our dual Base64 Encoder & Decoder consolidates both conversion directions into a unified, high-performance workspace.

Both panels operate simultaneously, completely offline and in memory. You can test encoded API tokens on the left while drafting Base64 basic authentication strings or JSON payloads on the right.

Key Features of the Dual Workspace

Real-Time SyncBoth conversion engines update instantly as you type or paste without pressing buttons.
Full International Script SupportRobust UTF-8 handling for Arabic, Urdu, Japanese, Chinese, Hindi, and emoji in both directions.
Diagnostic ValidationClear error messages highlight illegal characters, bad padding, or length anomalies.
Browser-Only SecurityYour payloads never leave your computer, ensuring absolute privacy for sensitive tokens.

Frequently Asked Questions

Clear, concise answers to common questions about Base64 decoding, encoding, and specifications.

Base64 decoding is the process of translating a Base64-encoded ASCII string back into its original binary representation or readable text format. It takes groups of four 6-bit characters and reconstructs the original 8-bit bytes.

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