# How to determine Line-Height

Hello,

I'm new to typography and I have been reading and learning as I go the best I can. However, I'm stumped on how to determine the proper line-height to use.

I guess what I'm looking for is the mathematical formula that is used to determine the proper line-height based on the font-size and or line-width.

I have seen NUMBEROUS typographic scale websites were you plug in the font-size and it gives you the correct line-height to use. I'm not looking for those sites so PLEASE DON'T POST THEM, I have already seen them.

I just want to learn what mathematical formula is used to determine proper Line-Height based on the Font-Size used and don't want to rely on a website to give me that information (that is not how I can learn).

I plan on building a responsive website and I need to know line-height for body, p, h1-h6 tags. I know that at different breakpoints I may need to adjust the font-size and line-height and that is what I'm looking for. The mathematical formula to use to determine the proper font-size and line-height.
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Data ScientistCommented:
Typography is an art. There is no hard and fast formula or correct measure. That's why we have designers.

Here's a page that talks about the Golden Ratio, approx: 1.6, so if you have 14pt text, your line height should be at least 14*1.6 = 22.4pt, but that is just a rough guideline for body text. Often Headlines are much tighter.

http://www.pearsonified.com/2011/12/golden-ratio-typography.php
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Author Commented:
So if I'm going to design a site then how can I determine the line-height for all other elements (h1-h6).
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Data ScientistCommented:
you have to use your judgment or hire a designer. like i said, it's an art..

you could try a few different combinations and see what you like best
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Author Commented:
Ok, so there is no true mathematical formula to generate that then?
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Author Commented:
I'm looking for a better solution than to hire a designer Kyle.
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Data ScientistCommented:
if you don't want to hire a designer, then you have to take on the role of designer.

no, there is no mathematical formula. i'm sorry that's not what you want to hear, but that is the answer to your question.

in general, if you're not an artist, the Golden Ratio is a solid rule of thumb for assigning proportions..
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Data ScientistCommented:
You should also consider things like baseline-grid, optimal container width for a given font-size, etc.., etc... and much much more.

Leading (line-height in the world of web design), should also be determined by the x-height of the given typeface (font). Not all typefaces are created equal, so you can have one face with a large x-height which probably needs more leading than a different face of the same point size.

It's an Art :)
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Data ScientistCommented:
just one more thing.. you don't actually have to specify line-height at all. If you don't feel comfortable making design decisions, you can let the browser take of it. It won't be as good as a designer wold have done, but it won't be potentially as awful as a non designer's work.

anyway, none of this is intended to be a criticism, just trying to be helpful.
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