Free online CSS line-height generator. Visually adjust line-height values with px, em, %, and unitless support. Real-time multi-line text preview, one-click copy CSS code. Perfect for designers and developers optimizing typography and readability. Client-side only.
How to Use the CSS Line Height Generator
Using the CSS Line Height Generator is straightforward:
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Enter Your Values
Input the required numbers and parameters into the calculator fields. Each field is clearly labeled β simply type your values or use the spinner controls to adjust them. -
Configure Options
Select any additional options such as computation mode, currency, time period, or precision level. The calculator updates automatically as you change values. -
View the Results
The calculated result is displayed instantly with clear formatting. You can Copy the result to your clipboard or adjust input values to see how different scenarios affect the outcome.
FAQ
What is the recommended line height?
For body text, a line height of 1.5-1.8 is generally recommended, while headings typically use 1.2-1.4. Line heights below 1.2 make text feel cramped and hard to read, while values above 2.0 spread the text out too much.
Should I use unitless line height?
Unitless values are the recommended approach because the line height scales proportionally with the font size. px values do not scale, which can cause text to overlap when the font size changes.
Does this tool work on mobile devices?
Yes, this tool is fully responsive and works on all modern browsers including Chrome, Safari, Firefox, and Edge on desktop, tablet, and mobile devices.