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HTML Encoder / Decoder

Encode or decode HTML entities safely.

🌐 Uses API
Also try:Historical Age Calculator·Pet Age Calculator·Relationship Timeline

Frequently asked questions

What characters are encoded?

By default, &, <, >, " and ' are encoded to HTML entities.

Is my data uploaded?

No. Everything runs locally in your browser.

Does it sanitize HTML?

No, this is not an HTML sanitizer. It only encodes/decodes entities.

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Frequently asked questions

What is HTML encoding?
HTML encoding converts special characters to entity references: < becomes &lt;, > becomes &gt;, & becomes &amp;. This prevents characters from being interpreted as HTML tags, which is essential for security and correct display.
Why is HTML encoding important for security?
Unencoded user input can enable XSS (Cross-Site Scripting) attacks. If a user enters <script>alert(\"hacked\")</script> and it\\
What characters must be HTML encoded?
Essential: < > & \" \\
What is the difference between named and numeric entities?
Named entities use words: &lt; &amp; &copy;. Numeric entities use codes: &#60; &#38; &#169;. Both work; named are more readable but not all characters have names. Our tool outputs named entities when available.
When should I decode HTML entities?
Decode when: extracting text from HTML for processing, displaying entity-encoded API responses, or working with legacy systems that over-encode. Be careful not to decode user content before displaying it (security risk).

About This Tool

Encode or decode HTML entities safely.

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: html entities, encode html, decode html, escape html, unescape html

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and it\\\\"}},{"@type":"Question","name":"What characters must be HTML encoded?","acceptedAnswer":{"@type":"Answer","text":"Essential: < > & \\\" \\\\"}},{"@type":"Question","name":"What is the difference between named and numeric entities?","acceptedAnswer":{"@type":"Answer","text":"Named entities use words: < & ©. Numeric entities use codes: < & ©. Both work; named are more readable but not all characters have names. Our tool outputs named entities when available."}},{"@type":"Question","name":"When should I decode HTML entities?","acceptedAnswer":{"@type":"Answer","text":"Decode when: extracting text from HTML for processing, displaying entity-encoded API responses, or working with legacy systems that over-encode. Be careful not to decode user content before displaying it (security risk)."}}]}

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