CSS Units Converter PRO
Convert px, rem, em, vw, vh, pt, and percent instantly. Fully adjustable root and viewport settings.
How to use the CSS Units Converter?
- Enter a value and select its unit (e.g., 32px) in the input panel.
- Adjust the Root Font-Size and Viewport dimensions to match your design context.
- The tool instantly calculates the equivalent values in rem, em, vw, vh, pt, and percent.
- Hover over any result card and click "Copy" to paste it into your CSS.
Frequently Asked Questions (FAQ)
What is the default Root Font-Size?
Most browsers default to 16px. This means 1rem is equal to 16px unless you change the root font-size in your CSS.
Why are pt (points) converted?
Points are physical print units (1pt = 1/72 inch). They are often used when creating print stylesheets for web pages.
About the CSS Units Converter PRO
The CSS Units Converter PRO by Grab-Kit is a free online tool designed for frontend developers and web designers. Modern CSS relies on a variety of units: px for precise dimensions, rem and em for accessible, scalable typography, vw and vh for responsive viewport-based layouts, and pt for print stylesheets. Converting between these units mentally is nearly impossible, especially when factoring in different root font sizes or screen resolutions. Our tool handles all these calculations instantly and accurately.
Using the tool is incredibly straightforward. Enter a value and select its unit (e.g., 32px). The tool instantly calculates and displays the equivalent values in rem, em, vw, vh, pt, and percent. What makes this tool "PRO" is the customizable settings panel: you can adjust the root font size (default 16px), the viewport width, and the viewport height to match your exact design context. This ensures your conversions are perfectly accurate for your specific CSS environment, making it an essential utility for responsive web development.
Why use Grab-Kit?
All our tools run entirely in your browser using native JavaScript. This means your calculations are performed instantly without any server-side delays. It is completely free, requires no signup, and works flawlessly on both desktop and mobile devices, making it the perfect companion for your frontend workflow.