Set the base and ratio
The base font size is multiplied by the chosen ratio raised to increasing powers to generate each scale step, the standard modular-scale method.
Free MVP design tool
Type Scale AI
Generate a responsive typography scale based on your product type, target devices and readability requirements.
- Calculated instantly from your inputs
- No signup or data submission
- A focused next step for MVP planning
Your entries remain in this browser session and are not sent to MVPHub.
Your inputs
Describe your typography needs
A few inputs are enough. Type Scale AI computes a real modular scale and adjusts it for your device mix and readability needs.
Your calculated result
Your result
0/100
Planning score
Recommended next actions
How it works
Adjust for device and readability
A mobile-heavy mix nudges the base size and line-height up; a high-readability priority increases minimum body size and step count.
Score coverage
The result rates how well the generated scale covers heading hierarchy, body text and UI label needs.
Frequently asked questions
What is a "modular" type scale?
A scale where each size is the previous size multiplied by a fixed ratio, producing proportional, harmonious steps instead of arbitrarily chosen sizes.
Which ratio should I pick?
Smaller ratios (1.125–1.2) suit dense product UI with many text sizes on screen at once; larger ratios (1.25–1.333) suit marketing pages with fewer, bolder headings.
Why does device mix matter?
Mobile screens need a larger practical minimum body size and looser line-height for readability at typical viewing distance, so the tool adjusts the base accordingly.
Is this scale accessible by default?
The generated minimum sizes respect common accessibility guidance, but always verify actual contrast and zoom behaviour in your implementation.
How we compare
| Capability | MVPHub | Figma | type-scale calculators |
|---|---|---|---|
| Device and readability-adjusted scale | ✓ | × | — |
| Coverage scoring against product needs | ✓ | × | × |
| No account or file required | ✓ | × | ✓ |
Standalone type-scale calculators compute the same ratio math but without adjusting for device mix or scoring coverage against your specific product needs the way Type Scale AI does.