CSS Units Converter (PX ↔ REM ↔ EM ↔ VW ↔ PT)
Bi-directional CSS unit conversion matrix with responsive clamp() generator and Tailwind CSS class mapper.
CSS Units Converter (PX ↔ REM ↔ EM ↔ VW ↔ PT) on ApexTools is a free, privacy-first online utility. All computations and file transformations process locally or within private auto-purged memory with zero sign-up.
⚡ 100% Client-Side CSS Math • Instant Zero Latency
Your data is computed entirely inside your browser's JavaScript engine and is never sent to our servers.
CSS Baseline Context
Root: 16px • Parent: 16px • Viewport: 1920×1080px
Synchronized CSS Unit Matrix
Edit any unit field below — all other units recalculate instantaneously.
text-base (1rem / 16px)Absolute screen pixels (CSS 96 DPI)
Relative to root <html> font-size (16px)
Relative to parent element font-size (16px)
1% of screen width (1920px)
1% of screen height (1080px)
Traditional print typography point (1pt = 1.333px)
Relative percent of parent (16px)
CSS Fluid Typography & clamp() Generator
Smooth mathematical interpolation between mobile and desktop screen sizes.
Target size at mobile viewport
Target size at desktop viewport
Mobile benchmark (e.g. 375px)
Desktop benchmark (e.g. 1440px)
font-size: clamp(1.0000rem, 0.6479rem + 1.5023vw, 2.0000rem);Responsive Fluid Typography
Drag the slider above to see this headline scale continuously without rigid media query breakpoints.
How to Convert with CSS Units Converter (PX ↔ REM ↔ EM ↔ VW ↔ PT)
Follow these 3 simple steps to complete your conversion in seconds.
Enter Input Value or Data
Input your value or paste text into the input field for CSS Units Converter (PX ↔ REM ↔ EM ↔ VW ↔ PT).
Adjust Settings or Units
Select desired output format, decimal precision, or transformation flags.
Copy or Save Output
The result is calculated instantly. Click Copy or Download to save your converted result.
Frequently Asked Questions
Common questions and answers about CSS Units Converter (PX ↔ REM ↔ EM ↔ VW ↔ PT).