What is a Typographic Scale?
A visual typographic scale encapsulates the sizes, space and proportions of type elements relative to on another in a project. This includes everything from the main body text style to headlines, subheaders, captions and any other text element.
- Use a base font size of 16 CSS pixels. Adjust size based on properties of the font being used.
- Use sizes relative to the base size to define the typographic scale.
- Text needs vertical space between characters; the general recommendation is to use the browser default line-height of 1.2 em.
- Restrict the number of fonts used and the typographic scale.
Create harmony and rhythm
A type scale does more than just help users move through the copy, it creates harmony and rhythm for the flow of text. This is important on any device. So where do you start?
Device Type | Minimum Size | 40% Recommendation (adjusted for easy use) | 80% Maximum (adjusted for easy use) |
Small Phone | 4 | 5.6 (6) | 7.2 (7.5) |
Large Phone | 6 | 8.4 (8.5) | 10.8 (11) |
Phablet | 7 | 9.8 (10) | 12.6 (13) |
Tablet | 8 | 11.2 (11.5) | 14.4 (14.5) |
Laptop/Desktop | 10 | 14 (14) | 18 (18) |
Character and spacing guidelines
There are some other guidelines that designers look to as well when it comes to type on the screen. When it comes to spacing, one of the rules of thumb has been to look at characters per line to ensure readability.- Desktop and large devices: 60 to 75 characters per line
- Phones and small devices: 35 to 40 characters per line

Tips to get started
There are plenty of ways to create a typographic scale and ensure that the text does not make your design look fat. How you go about it likely depends on your comfort level with code and development in addition to the design.
3 tools to create a type scale

- Type Scale: Enter text and play with options such as size, scale and font right on the screen; grad the CSS or edit the code right from the tool;
- Modular Scale: The scale works like a rule to help determine sizes for type; then download the results as a Sass or JS plugin or see them on the screen;
- Golden Ratio Typography Calculator: The tool optimizes size, line height, width and characters per line using the golden ratio
Conclusion
The right typographic scale will keep your design looking trim and svelte. It is the added harmony that users might not understand but contributes to overall readability and usability. It’s likely that the scale is off if the design “just doesn’t look right.” Improperly sized type can be tough to pinpoint but is often a place to look when something about a design is out of balance. Play with a few different options for scale before settling on something, and remember the trend right now is for type that’s a bit larger than in the past.Carrie Cousins
Carrie Cousins is a freelance writer with more than 10 years of experience in the communications industry, including writing for print and online publications, and design and editing. You can connect with Carrie on Twitter @carriecousins.
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