Arcminute (′)
A minute of arc is one sixtieth of a degree. It is used for latitude and longitude, telescope resolution and rifle scopes (MOA).
Symbol: ′ (ASCII: arcmin)
Quantity: plane angle
SI relation: 1 ′ = 0.0002908882086657 rad (exact)
Derivation: 1′ = (1/60)° = π/10 800 rad.
Exact: yes, by definition
Typical uses
- Latitude and longitude (degrees, minutes, seconds)
- Optics and astronomy
- Shooting (minute of angle)
Convert minutes of arc to other units
| Conversion | 1 ′ equals | Reverse |
|---|---|---|
| minute of arc to radian | 0.0002908882087 rad | radian to minute of arc |
| minute of arc to degree | 0.01666666667 ° | degree to minute of arc |
| minute of arc to gradian | 0.01851851852 gon | gradian to minute of arc |
| minute of arc to revolution | 0.0000462962963 rev | revolution to minute of arc |
| minute of arc to second of arc | 60 ″ | second of arc to minute of arc |
Open the Angle Converter to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (radian) and Table 8 (non-SI units accepted for use with the SI).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Arcminute (′). Retrieved October 25, 2026, from https://scientificconverters.com/units/arcminute/
IEEE
Scientific Converters, "Arcminute (′)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/arcminute/