Convert font size from Pixels to Points, Percentage and em
To convert font size from Pixels to em just divide by 16
| Pixels | Points | Percentage | Ems |
|---|---|---|---|
| 9px | 7pt | 55% | 0.55em |
| 10px | 7.5pt | 62.5% | 0.625em |
| 11px | 8pt | 70% | 0.7em |
| 12px | 9pt | 75% | 0.75em |
| 13px | 10pt | 80% | 0.8em |
| 14px | 10.5pt | 87.5% | 0.875em |
| 15px | 11pt | 95% | 9.5em |
| 16px | 12pt | 100% | 1em |
You might find this useful as well. http://pixel2em.kleptomac.com
This provides an online pixel to em converter and you can also do a complete CSS file conversion.