Arc-second to Degree
Free instant arc-second to degree converter. 1 ″ = 0.000277778 °.
Common Arc-second to Degree values
| Arc-second (″) | Degree (°) |
|---|---|
| 0 | 0 |
| 30 | 0.00833333 |
| 45 | 0.0125 |
| 60 | 0.0166667 |
| 90 | 0.025 |
| 180 | 0.05 |
| 270 | 0.075 |
| 360 | 0.1 |
How does Arc-second to Degree conversion work?
Type a value in the Arc-second (″) field and the equivalent in Degree (°) appears instantly to the right. The math uses the exact formula shown above — no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.
Arc-second. One sixtieth of an arc-minute, or 1/3600 of a degree. Used in astronomy for stellar positions and lens/optics resolution.
Degree. The most common angle unit. A full circle = 360°.
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No submit button — the result updates as you type. Math runs entirely in your browser, so it’s as fast as your device.
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Works in any modern browser — Mac, Windows, Linux, iPhone, Android, tablets. No installation, no signup.
🎯 Accurate conversions
Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.
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