Modular Scale Calculator
Generate a modular typography scale from a base size and ratio.
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Tool guide
Modular Scale Calculator: how it works
Practical information to understand the result and use this tool correctly.
About Modular Scale Calculator
Generate a modular typography scale from a base size and ratio.
The tool runs directly in the browser for immediate results.
How to use it
- 1Enter the values you want to calculate or process.
- 2The result updates instantly on the same page.
- 3Copy, share, or export the result if the tool allows it.
Frequently asked questions
- Do I need to sign up?
- No. The tool works without an account.
- Are my data uploaded?
- Compatible operations run locally in the browser.
- What is a modular scale?
- A modular scale multiplies a base font size by a constant ratio for each step up or down, creating harmonious typography sizes (e.g. 1.25 major third, 1.333 perfect fourth).
- Which ratio should I use?
- Common ratios: 1.125 (minor second), 1.2 (minor third), 1.25 (major third), 1.333 (perfect fourth), 1.414 (augmented fourth), 1.5 (perfect fifth), 1.618 (golden ratio).