How to use: CSS Unit Converter (px, rem, em, %)

CSS Unit Converter (px, rem, em, %) is a free online CSS Tools tool that convert between px, rem, em, pt and % with a configurable root size instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.

Input CSS Unit Converter (px, rem, em, %) Output Runs 100% in your browser — your data never leaves your device.
CSS Unit Converter (px, rem, em, %) — Input → Output. Runs 100% in your browser — your data never leaves your device.

How to use

Using CSS Unit Converter (px, rem, em, %) takes three steps:

  1. Paste your data into the input box (or load the example).
  2. Configure the options to match your target format or scenario.
  3. Copy, download or inspect the output — it updates live as you type.
How to use · CSS Unit Converter (px, rem, em, %) 1 Input Paste your data intothe input box (or loadthe example). 2 Options Configure the optionsto match your targetformat or scenario. 3 Output Copy, download orinspect the output —it updates live as youtype.
How to use — 3

Description

Convert between px, rem, em, pt and % with a configurable root size.

Because everything is computed client-side, CSS Unit Converter (px, rem, em, %) is safe to use with sensitive data such as API keys, tokens or private logs.

Run

These ready-made examples show typical inputs and the exact output CSS Unit Converter (px, rem, em, %) produces for them.

Examples

px → rem at 16px root.

16

Use cases

Common situations where CSS Unit Converter (px, rem, em, %) helps:

  • Convert between px, rem, em, pt and % with a configurable root size.
  • Because everything is computed client-side, CSS Unit Converter (px, rem, em, %) is safe to use with sensitive data such as API keys, tokens or private logs.

FAQ

What is CSS Unit Converter (px, rem, em, %)?

CSS Unit Converter (px, rem, em, %) convert between px, rem, em, pt and % with a configurable root size. It runs entirely in your browser, so your data stays private.

Is CSS Unit Converter (px, rem, em, %) free to use?

Yes. CSS Unit Converter (px, rem, em, %) is free, unlimited and works without registration or installation.

Does my data get uploaded?

No. All processing happens locally in your browser; nothing is sent to any server.

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