Arcseconds to Degrees Converter
Convert arcseconds to degrees — 3,600 arcseconds to the degree. Results update as you type; exact factors shown.
One arcsecond is 0.0003 degrees — see the exact factor, not a rounded rule of thumb.
How the arcseconds to degrees converter works
Angles convert through the radian. A full turn is 2π radians = 360° = 400 gon = 6,400 NATO mils. A degree is 60 arcminutes, an arcminute 60 arcseconds.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
Common angle conversions
| From | To | Units |
|---|---|---|
| 1 ″ | 0.0003 ° | arcsecond to degrees |
| 10 ″ | 0.0028 ° | arcseconds to degrees |
| 60 ″ | 0.0167 ° | arcseconds to degrees |
| 100 ″ | 0.0278 ° | arcseconds to degrees |
| 360 ″ | 0.1 ° | arcseconds to degrees |
| 600 ″ | 0.1667 ° | arcseconds to degrees |
| 1,000 ″ | 0.2778 ° | arcseconds to degrees |
| 1,800 ″ | 0.5 ° | arcseconds to degrees |
| 3,600 ″ | 1 ° | arcseconds to degrees |
| 7,200 ″ | 2 ° | arcseconds to degrees |
| 36,000 ″ | 10 ° | arcseconds to degrees |
| 129,600 ″ | 36 ° | arcseconds to degrees |
Units in this converter and their exact factors
| Unit | Symbol | One unit in radians |
|---|---|---|
| degree | ° | 0.0174532925 radian |
| radian | rad | 1 radian |
| gradian (gon) | gon | 0.0157079633 radian |
| arcminute | ′ | 0.0002908882 radian |
| arcsecond | ″ | 0.0000048481 radian |
| turn (revolution) | rev | 6.2831853072 radian |
| NATO mil (1/6400 turn) | mil | 0.0009817477 radian |
FAQFrequently asked questions about angle conversion
How many arcseconds in a degree?
Exactly 3,600 — sixty arcminutes of sixty arcseconds each.
What is an arcsecond?
A very small angle: about the width of a coin seen from four kilometres away.
Why do astronomers use them?
Because the angles involved are tiny. Stellar parallaxes are fractions of an arcsecond.
What is a parsec?
The distance at which one astronomical unit subtends one arcsecond — about 3.26 light years.
What is 3,600 arcseconds?
One degree.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.