Convert radian (rad) to arcsecond (arcsec).
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Arcsecond to Radian Converter (arcsec to rad)
Convert arcsecond (arcsec) to radian (rad).Unit Converter · Angle
Quick answer
1 arcsecond (arcsec) is approximately equal to 0.00000485 radians (rad). 1 radian (rad) is approximately equal to 2,06,264.8 arcseconds (arcsec).
To convert arcsec to rad, multiply the value in arcseconds by 0.0000048481. For example, 10 arcsec = 0.00004848 rad, and 100 arcsec = 0.00048481 rad.
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Quick reference — arcsecond to radian
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How to convert arcseconds to radians
How many radians are in an arcsecond? 1 arcsecond is about 0.00000485 radians. This free arcsec to rad converter and arcsecond to radian calculator gives the answer instantly for any value.
To convert arcsecond (arcsec) to radian (rad), multiply the value in arcseconds by 0.0000048481.
rad = arcsec × 0.0000048481
- 1
Take the value in arcseconds
For example, 25 arcsec.
- 2
Multiply by 0.0000048481
25 × 0.0000048481.
- 3
Read the answer in radians
25 arcsec = 0.0001212 rad.
Arcsecond to Radian conversion table
Common values from 1 to 1,000 arcseconds converted to radians.
| Arcsecond (arcsec) | Radian (rad) |
|---|---|
| 1 arcsec | 0.00000485 rad |
| 2 arcsec | 0.0000097 rad |
| 3 arcsec | 0.00001454 rad |
| 4 arcsec | 0.00001939 rad |
| 5 arcsec | 0.00002424 rad |
| 6 arcsec | 0.00002909 rad |
| 7 arcsec | 0.00003394 rad |
| 8 arcsec | 0.00003879 rad |
| 9 arcsec | 0.00004363 rad |
| 10 arcsec | 0.00004848 rad |
| 15 arcsec | 0.00007272 rad |
| 20 arcsec | 0.00009696 rad |
| 25 arcsec | 0.0001212 rad |
| Arcsecond (arcsec) | Radian (rad) |
|---|---|
| 30 arcsec | 0.00014544 rad |
| 40 arcsec | 0.00019393 rad |
| 50 arcsec | 0.00024241 rad |
| 60 arcsec | 0.00029089 rad |
| 70 arcsec | 0.00033937 rad |
| 75 arcsec | 0.00036361 rad |
| 80 arcsec | 0.00038785 rad |
| 90 arcsec | 0.00043633 rad |
| 100 arcsec | 0.00048481 rad |
| 250 arcsec | 0.00121203 rad |
| 500 arcsec | 0.00242407 rad |
| 1,000 arcsec | 0.00484814 rad |
About arcseconds and radians
Arcsecond (arcsec)
An arcsecond (″) is 1/60 of an arcminute, or 1/3,600 of a degree.
Radian (rad)
A radian (rad) is the angle at the center of a circle that cuts off an arc as long as the radius. A full turn is 2π radians, so 180° = π rad.
arcsec to rad: common questions
- How many radians are in 1 arcsecond?
- 1 arcsecond (arcsec) is approximately equal to 0.00000485 radians (rad). In short: 1 arcsec ≈ 0.00000485 rad.
- How do I convert arcseconds to radians?
- To convert arcsec to rad, multiply the value in arcseconds by 0.0000048481. For example, 5 arcsec = 0.00002424 rad.
- How do I convert radians to arcseconds?
- Use the Radian to Arcsecond converter, which applies the exact reverse factor.
- What is 10 arcsec in rad, and what is 100 arcsec?
- 10 arcsec = 0.00004848 rad, and 100 arcsec = 0.00048481 rad. The table above lists more values from 1 to 1,000.
- Is this arcsec to rad converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
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