Calculate Responsive Font Sizes
Enter your base font size and target screen width to generate responsive font sizes. Preview text and copy the CSS code.
Responsive text preview
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Why Use Our Font Size Calculator?
Responsive Typography
Calculate font sizes in rem, em, px, and vw for fluid designs.
Device Previews
Preview text at phone, tablet, and desktop sizes.
Export CSS
Copy or download responsive CSS code instantly.
Mobile-Friendly
Works seamlessly on all devices.