Arcseconds to Degrees
Type a value in Arcseconds and get the result in Degrees, calculated exactly.
90 Arcseconds = 0.025 Degrees
Precision
Exact factorThis result is exact.
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Turn either dial: drag it, use the arrow keys, or scroll while it has focus. Both cover the same range.
Range -50 – 100 ″ = -0.0138889 – 0.0277778 °
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Formula
° = ″ ÷ 3,600
To convert Arcseconds to Degrees, divide the value by 3,600.
Worked examples
- 0 ″ ÷ 3,600 = 0 °
- 90 ″ ÷ 3,600 = 0.025 °
- 100 ″ ÷ 3,600 ≈ 0.02777777778 °
This factor is exact by definition.
Conversion table
| Arcseconds (″) | Degrees (°) |
|---|---|
| 1 | ≈ 0.0002777778 |
| 5 | ≈ 0.001388889 |
| 10 | ≈ 0.002777778 |
| 15 | ≈ 0.004166667 |
| 30 | ≈ 0.008333333 |
| 45 | 0.0125 |
| 60 | ≈ 0.01666667 |
| 90 | 0.025 |
| 120 | ≈ 0.03333333 |
| 135 | 0.0375 |
| 180 | 0.05 |
| 270 | 0.075 |
| 360 | 0.1 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Degrees to Arcseconds
| Degrees (°) | Arcseconds (″) |
|---|---|
| 1 | 3,600 |
| 5 | 18,000 |
| 10 | 36,000 |
| 15 | 54,000 |
| 30 | 108,000 |
| 45 | 162,000 |
| 60 | 216,000 |
| 90 | 324,000 |
| 120 | 432,000 |
| 135 | 486,000 |
| 180 | 648,000 |
| 270 | 972,000 |
| 360 | 1,296,000 |
Unit definitions
- Arcseconds ″
- One sixtieth of an arcminute, 1/3600 of a degree.
- Degrees °
- One 360th of a full turn.
Questions people ask
Arcseconds to Degrees: what is the conversion factor?
One ″ is ≈ 0.000277777778 °.
How do I convert Arcseconds to Degrees?
Use the formula above. For example, 90 ″ = 0.025 °.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.