📐

Free Pixel to REM Converter

Convert between px, rem, em, pt, vw, vh, and % with a configurable base font size. Includes a reference table for common pixel sizes.

Runs in your browserNo sign-up, no pop-upsNo login requiredFree forever

From

1rem

Context (affects rem/em/vw/vh/%)

Root font (px)

Parent font (px)

Viewport W (px)

Viewport H (px)

All conversions for 16 px

Root EM (rem)1 rem

EM (em)1 em

Points (pt)12 pt

Viewport Width (vw)1.11111 vw

Viewport Height (vh)1.77778 vh

Percent (%)100 %

Common pixel sizes → rem (at 16px base)

Optimize for your platform

PX to REM for Web Development CSS Units for Responsive Design Convert Design Specs to CSS Units Tailwind CSS Unit Reference Convert CSS Units for Print Stylesheets

How It Works

Enter

Enter your text or data.

Process

Processed instantly in your browser. No server, no waiting.

Download

Save your result. Nothing is stored.

Why use ours?

✓Completely free — no hidden costs, ever

✓No account, email, or login required

✓Runs entirely in your browser — no uploads

✓Works on any device — phone, tablet, desktop

✓Open and ad-supported, with no tracking

✓Loads fast, with no installation needed

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