Do I need to install anything to use these baseline grid calculators?

No. All five tools run in your browser with no download or installation required. Fitbaseline also offers a separate paid InDesign script if you want to apply the calculated baseline directly in that software.

Can I export the baseline grid values for use in design software?

Fitbaseline lets you copy the fitted baseline value or get it for InDesign. The other tools display results on screen; Number Convert and CapsToLowercase provide visual guides or CSS that you can copy manually.

Which tool should I use if I only know my body font size?

Number Convert is the simplest: enter your body copy size and it calculates the optimal baseline interval instantly, with no signup needed.

Is the baseline grid calculator free or does it have a paywall?

All five tools are free to use in the browser. Fitbaseline offers a free calculator and a paid optional InDesign script for automated grid application.

What’s the difference between a baseline increment and a baseline grid?

The baseline increment is the vertical spacing unit you choose; the baseline grid is the repeated pattern of that spacing across the whole page. Fitbaseline adjusts the increment to fit your document height, while the other tools help you pick an increment that works with your type scale.

Typography5 options compared

Baseline Grid Calculator

Fitbaseline includes a free online calculator that fits a baseline grid to a document height by adjusting the baseline increment mathematically. You enter page height and desired baseline, and it outputs a fitted baseline value. The calculator works in-browser for free, while a separate optional InDesign script is paid.

Editors’ Top PickBased on community votes

Number Convert

numberconvert.com

Calculate your baseline grid with our free online tool. Get accurate results instantly. No signup required.

Open Number Convert Read review →

Other OptionsRanked by votes

02
02
CapsToLowerCase
capstolowercase.com
Its Baseline Grid Generator lets you set baseline increments and default line-height to build a usable baseline grid ...
Open site View details
03
03
The Good Line-Height
thegoodlineheight.com
This free tool calculates line-height values that snap type to a baseline grid using font size, ratio, and grid row h...
Open site View details
04
04
Fitbaseline
fitbaseline.com
Fitbaseline includes a free online calculator that fits a baseline grid to a document height by adjusting the baselin...
Open site View details
05
05
Gridlover
gridlover.net
Gridlover provides an interactive baseline and rhythm calculator through font size, line-height, and scale controls. ...
Open site View details

Side by side

Baseline Grid Calculator options compared

Tool	Best for	Strengths	Limitations
Number Convert numberconvert.com	Quick baseline grid math	No signup required Instant browser results Precise calculations from body copy size	Focuses on body copy size rather than full document height
CapsToLowerCase capstolowercase.com	Visual grid preview and CSS export	Preview alignment behavior Export CSS for implementation No signup or paywall	Baseline increment setting only, not full document fitting
The Good Line-Height thegoodlineheight.com	Line-height tuning for baseline grids	Calculates line-height values that snap to baseline grid Uses font size, ratio, and grid row height Instant updates without account creation	Less about calculating a full grid, more about line-height values
Fitbaseline fitbaseline.com	Fitting baseline to document height	Free online calculator adjusts baseline increment to document height Outputs fitted baseline value for InDesign Works in-browser for free	Requires manual entry of page height and desired baseline Optional InDesign script is paid
Gridlover gridlover.net	Interactive rhythm and modular scale	Free to use, no signup Real-time preview of text alignment Modular scale and font size controls	No explicit document height fitting; focuses on interactive sliders

Buyer's guide

How to choose a baseline grid calculator

If you need a baseline grid that snaps to a specific page height, enter your document height and desired baseline increment into Fitbaseline to get a fitted value that distributes evenly across the page. If you are designing body copy and want to calculate the ideal baseline interval from font size without signing up, Number Convert gives instant results from a single input. Consider whether you need the grid to match a fixed page height (Fitbaseline) or to establish vertical rhythm from your type scale (Number Convert, Gridlover, or The Good Line-Height).

Questions

Baseline Grid Calculator FAQ

Do I need to install anything to use these baseline grid calculators?: No. All five tools run in your browser with no download or installation required. Fitbaseline also offers a separate paid InDesign script if you want to apply the calculated baseline directly in that software.
Can I export the baseline grid values for use in design software?: Fitbaseline lets you copy the fitted baseline value or get it for InDesign. The other tools display results on screen; Number Convert and CapsToLowercase provide visual guides or CSS that you can copy manually.
Which tool should I use if I only know my body font size?: Number Convert is the simplest: enter your body copy size and it calculates the optimal baseline interval instantly, with no signup needed.
Is the baseline grid calculator free or does it have a paywall?: All five tools are free to use in the browser. Fitbaseline offers a free calculator and a paid optional InDesign script for automated grid application.
What’s the difference between a baseline increment and a baseline grid?: The baseline increment is the vertical spacing unit you choose; the baseline grid is the repeated pattern of that spacing across the whole page. Fitbaseline adjusts the increment to fit your document height, while the other tools help you pick an increment that works with your type scale.

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