Is Pixel to Em Converter free?

Yes, completely free with no limits, no registration required, and no ads interrupting your workflow.

What's the difference between em and rem?

Em is relative to the parent element's font size, while rem is relative to the root element (html) font size. Use rem for consistent sizing across your entire website.

What base font size should I use?

Use 16px (the browser default) unless your project specifies differently. Check your CSS for 'html { font-size: }' to find your project's base size.

Can I convert rem back to pixels?

Yes, reverse conversion is available. Enter your rem value in the pixel field and ensure the base font size matches your project's root font size setting.

Does this tool work on mobile devices?

Yes, works perfectly on all devices including iPhone, iPad, Android phones, tablets, and desktop browsers. No installation needed.

Is my data safe when using this converter?

Yes, 100% safe. All calculations happen in your browser. No values are stored, logged, or sent to any server.

Can I convert multiple values at once?

Convert one value at a time using the input field. For bulk conversions, repeat the process for each pixel value or use the formula: em = pixels ÷ base font size.

What decimal places does the converter support?

The converter supports up to 4 decimal places for precise em/rem values. Most browsers render values with 2-3 decimals accurately.

fast

Pixel to Em Converter — fast

Convert pixel values to em/rem units for CSS.

Base font size (px)

Typically 16px (browser default)

Pixels (px)

Em / Rem

Pixels

16.00px

Em / Rem

1.0000em

Base font size

16px

How to use Pixel to Em Converter

Enter Your Pixel Value

Type the pixel number into the 'Pixel (px)' input field at the top of the converter. For example, enter '16' to convert 16 pixels. The field accepts whole numbers and decimals.

Set the Base Font Size

Input your base font size in the 'Base Font Size (px)' field. Default is 16px (browser standard). Adjust this if your project uses a different base size like 14px or 18px.

Choose Em or Rem Unit

Click the toggle between 'Em' and 'Rem' buttons below the input fields. Select 'Em' for relative to parent element or 'Rem' for relative to root element.

View Instant Conversion Result

The converted value appears immediately in the 'Result' box below. Copy the result by clicking the 'Copy to Clipboard' button next to the output value.

Paste into Your CSS Code

Paste the copied em/rem value directly into your CSS file, HTML style tags, or CSS-in-JS framework. The conversion is complete and ready to use.

Frequently Asked Questions

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