Degree to Arc-second
Free instant degree to arc-second converter. 1 ° = 3600 ″.
Common Degree to Arc-second values
| Degree (°) | Arc-second (″) |
|---|---|
| 0 | 0 |
| 30 | 108000 |
| 45 | 162000 |
| 60 | 216000 |
| 90 | 324000 |
| 180 | 648000 |
| 270 | 972000 |
| 360 | 1296000 |
How does Degree to Arc-second conversion work?
Type a value in the Degree (°) field and the equivalent in Arc-second (″) 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.
Degree. The most common angle unit. A full circle = 360°.
Arc-second. One sixtieth of an arc-minute, or 1/3600 of a degree. Used in astronomy for stellar positions and lens/optics resolution.
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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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🎯 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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