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Base64 Encoder / Decoder

Convert text to Base64 and back. Works offline.

🌐 Uses API
Also try:JSON Formatter & Validator·Text Case Converter·URL Encoder / Decoder

Frequently asked questions

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data using 64 ASCII characters. It’s commonly used in data URIs and HTTP.

Is Base64 encryption?

No. It’s an encoding, not encryption. Do not use it to protect sensitive data; it’s reversible.

Does this work offline?

Yes. Encoding and decoding are done locally in your browser and work without a network connection.

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About This Tool

Convert text to Base64 and back. Works offline.

Key Benefits

How This Tool Works

  1. 1Enter your information in the input fields above
  2. 2Results calculate automatically in real-time
  3. 3Copy, share, or download your results as needed
  4. 4All processing happens locally in your browser for privacy

When to Use This Tool

Pro Tip:

Why Use INSINEX Tools?

Privacy First

Your data never leaves your device. All calculations happen locally in your browser.

Instant Results

No waiting, no loading—results appear immediately as you type.

Works Everywhere

Access from any device with a browser. Many tools even work offline.

Related topics: base64 decode, b64 encode, text to base64

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Privacy

Most processing happens locally in your browser for speed & privacy. Network calls occur only for live rates or updates.

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Premium

Premium feature

Historical analysis & trends

Track your past calculations and visualize patterns.

Calculation presets

Save, load, and manage your favorite calculation setups.

No presets saved yet.

Scenario planning

Compare multiple inputs side-by-side.

Batch processing

Upload a CSV to compute results in bulk.

Custom formulas

Create and reuse your own rules.

External data

Connect Google Sheets or an API as inputs.

By paying you agree to our Terms & Conditions • Privacy Policy • Shipping Policy • Cancellation & Refunds

Free Tier Usage0/100 calculations today
Premium feature

Historical analysis & trends

Track your past calculations and visualize patterns.

Calculation presets

Save, load, and manage your favorite calculation setups.

No presets saved yet.

Scenario planning

Compare multiple inputs side-by-side.

Batch processing

Upload a CSV to compute results in bulk.

Custom formulas

Create and reuse your own rules.

External data

Connect Google Sheets or an API as inputs.

By paying you agree to our Terms & Conditions • Privacy Policy • Shipping Policy • Cancellation & Refunds