Convert radian to arcsecond
Here you can quickly calculate how many arcsecond fit in one radian.
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- 1 rad = 206264.806247 ″
- 1 ″ = 0.000005 rad
Example: radian to arcsecond
- 1 radian = 206264.806247 arcsecond
Radian to arcsecond conversion table
| radian | arcsecond |
|---|---|
| 1 | 206264.806247 |
| 30 | 6187944.187413 |
| 45 | 9281916.281119 |
| 60 | 12375888.374826 |
| 90 | 18563832.562239 |
| 180 | 37127665.124477 |
| 270 | 55691497.686716 |
| 360 | 74255330.248955 |
Radian to arcsecond formula
To convert radian to arcsecond, multiply by 206264.806247.
1 rad = 206264.806247 ″
Example: 1 radian = 206264.806247 arcsecond
Common angle conversion mistakes
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The calculator is in the wrong mode. SIN() in a spreadsheet, Math.sin in code and a calculator in radian mode all read 90 as radians, so sin(90) gives about 0.894, not 1. Convert degrees to radians first, or switch the calculator to degree mode.
Quick radian and arcsecond conversion quiz
Score:
0
100 arcsecond equals 0.000485 radian.
Correct answer: 100 arcsecond = 0.000485 radian.
50 radian equals 2 060 000 arcsecond.
Correct answer: 50 radian = 1.03 × 10⁷ arcsecond.
2 radian equals 413 000 arcsecond.
Correct answer: 2 radian = 413 000 arcsecond.