Arcminute (′)
Exactly 1/60 of a degree.
What is an arcminute?
- Symbol
- ′
- Quantity
- Angle
- Unit system
- SI-accepted
- Definition
- Exactly 1/60 of a degree.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used in astronomy, navigation and rifle scopes (MOA). One arcminute is 1/60 of a degree.
Arcminute in other angle units
- 1 ′ ≈ 0.0002908882087 radRadian
- 1 ′ ≈ 0.2908882087 mradMilliradian
- 1 ′ ≈ 0.01666666667 °Arcminute to Degree converter
- 1 ′ = 60 ″Arcsecond
- 1 ′ ≈ 0.01851851852 gradGradian (gon)
- 1 ′ ≈ 0.0000462962963 revTurn (revolution)
Arcminute quick reference
| Arcminute | Degree | Radian | Milliradian |
|---|---|---|---|
| 1 ′ | ≈ 0.01666666667 ° | ≈ 0.0002908882087 rad | ≈ 0.2908882087 mrad |
| 10 ′ | ≈ 0.1666666667 ° | ≈ 0.002908882087 rad | ≈ 2.908882087 mrad |
| 100 ′ | ≈ 1.666666667 ° | ≈ 0.02908882087 rad | ≈ 29.08882087 mrad |
| 1000 ′ | ≈ 16.66666667 ° | ≈ 0.2908882087 rad | ≈ 290.8882087 mrad |
Where the arcminute fits
The next smaller angle unit is the arcsecond (″). 1 ′ = 60 ″, and 1 ″ ≈ 0.01666666667 ′.
The next larger angle unit is the milliradian (mrad). 1 ′ ≈ 0.2908882087 mrad, and 1 mrad ≈ 3.437746771 ′.
Frequently asked questions
- How many degrees are in one arcminute?
- One arcminute ≈ 0.01666666667 ° (degrees).
- How many radians are in one arcminute?
- One arcminute ≈ 0.0002908882087 rad (radians).
- How many milliradians are in one arcminute?
- One arcminute ≈ 0.2908882087 mrad (milliradians).