Here’s a chart that converts points to pixels (and ems and %). It’s an approximation, which will depend on font, browser and OS, but it’s a good starting point.
| 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% |