I wanted to change the default font type and size that the Thesis theme is using, but I’m not familiar with the point font size unit, which is the default in Thesis. What’s the equivalent of a 10-point font size in in pixels? Of course, I had to ask Mr. Google for the answer.
I found a font size conversion table for different font size units that I think I can use. I’m posting it here to help others who are looking for the same. There is no exact conversion for these font sizes, so remember that the values in the table are approximate (not exact) values.
| Points | Pixels | Ems | Percent |
|---|---|---|---|
| 6pt | 8px | 0.5em | 50% |
| 7pt | 9px | 0.55em | 55% |
| 7.5pt | 10px | 0.625em | 62.5% |
| 8pt | 11px | 0.7em | 70% |
| 9pt | 12px | 0.75em | 75% |
| 10pt | 13px | 0.8em | 80% |
| 10.5pt | 14px | 0.875em | 87.5% |
| 11pt | 15px | 0.95em | 95% |
| 12pt | 16px | 1em | 100% |
| 13pt | 17px | 1.05em | 105% |
| 13.5pt | 18px | 1.125em | 112.5% |
| 14pt | 19px | 1.2em | 120% |
| 14.5pt | 20px | 1.25em | 125% |
| 15pt | 21px | 1.3em | 130% |
| 16pt | 22px | 1.4em | 140% |
| 17pt | 23px | 1.45em | 145% |
| 18pt | 24px | 1.5em | 150% |
| 20pt | 26px | 1.6em | 160% |
| 22pt | 29px | 1.8em | 180% |
| 24pt | 32px | 2em | 200% |
| 26pt | 35px | 2.2em | 220% |
| 27pt | 36px | 2.25em | 225% |
| 28pt | 37px | 2.3em | 230% |
| 29pt | 38px | 2.35em | 235% |
| 30pt | 40px | 2.45em | 245% |
| 32pt | 42px | 2.55em | 255% |
| 34pt | 45px | 2.75em | 275% |
| 36pt | 48px | 3em | 300% |
Source: http://www.reeddesign.co.uk
If you find this post helpful or if you have comments, leave a note below. Also, if you know of a better conversion table (by better, I mean you have tried it yourself and it resulted in something good), let me know. I’m always looking for good stuff when it comes to design and WordPress use.


Hi Jay,
Much like you I have been looking around for a conversion table to assist in adjusting from em to px so this is really handy to keep. Recently received a gift of a large screen and was horrified to see how my site reflected so now to do some more work in sorting that out.
Cheers and thanks
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