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The Good Line-Height
Adjust font size and line-height ratios against a grid with The Good Line-Height, an interactive typography tool.
About The Good Line-Height
The Good Line-Height is a browser-based typography tool for testing how font size, line-height ratio and grid row height work together. Users adjust the three values and see the resulting line-height figure (shown as a numeric value, for example 48), with a grid that can be toggled on or off to check how text sits against the rows. The sample text is set in Playfair Display. The homepage also lists a Figma plugin and the tool runs only in English.
Key features
- Adjusts font size against the current page text
- Sets a line-height ratio to derive the resulting line-height value
- Controls grid row height independently of type settings
- Toggle a grid overlay to check text alignment on rows
- Displays the calculated good line-height as a number
- Homepage references an accompanying Figma plugin
Best for: Designers and typographers who want to check a line-height value against a grid before setting type.
Good for
- Combines font size, line-height ratio and grid row height in one view
- Shows a specific resulting line-height value rather than only a preview
- Runs in the browser with no stated installation requirement
Watch out for
- Pricing is not stated on the homepage
- The homepage does not describe saving, exporting or sharing settings
The Good Line-Height at a glance
- Website
- thegoodlineheight.com
- Category
- Online Tools › Text Tools
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
The Good Line-Height alternatives
Tools and sites you could use instead, ranked by how closely they match.
WhatFont helps identify the fonts used on web pages, with a browser tool for inspecting typography.
Formito creates typography-based logos and exports them as SVG or PNG, with font and color controls.
So You Need a Typeface is an interactive tool for choosing fonts for a project.
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The Good Line-Height FAQ
What values does the tool take as input?
Font size, line-height ratio and grid row height.
What does the tool output?
It reports the good line-height as a number, such as 48.
Is there a Figma version?
The homepage lists a Figma plugin, but gives no further details about it.
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