Free Typography Tools
Line Height Calculator
Convert a font size and unitless multiplier into pixel and rem line-height values.
What this tool does
Translate a type rhythm into implementation-ready values.
The calculator multiplies font size by a unitless line-height value and reports the equivalent pixels and rems.
An editable paragraph preview makes the result easier to judge than a number alone.
Use the tool
Calculate and preview line height
Set the type size and multiplier to inspect the resulting vertical rhythm.
Type size and leading
Convert a unitless line-height multiplier into pixels and rems.
Calculated line height
28.8 px
1.60 unitless · 1.800 rem
Comfortable line spacing helps readers follow a paragraph without losing their place between lines.
How to use it
Three quick steps
- 1Enter the intended font size.
- 2Adjust the unitless line-height multiplier.
- 3Review representative copy in the actual font and layout before implementation.
Worked example
Set comfortable body copy
Combine 18px type with a 1.6 multiplier.
FAQ
Questions about the line height calculator
Practical details about using the tool and understanding its result.
Keep working
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