1' | 0.01667° (degrees) | 290.9 μrad (microradians) | 0.2909 mrad (milliradians) | π/10800 radians | 0.01852 grads (unit officially deprecated)

1° | 60' 1 μrad | 0.003438' 1 mrad | 3.438' 1 rad | 3438' 1 grad | 54'

plane angle

non-SI but accepted for use with SI | recognized for use in astronomy

[angle]

Arc length s along the Earth's equator from s = Rθ: | 1.002 nmi (nautical miles) | 1.153 miles | 6087 feet | 1.855 km (kilometers) | 1855 meters

Arc length s around the Earth at 45° latitude from s = Rcos(45°)θ: | 0.7084 nmi (nautical miles) | 0.8152 miles | 4304 feet | 1.312 km (kilometers) | 1312 meters

Rotation count N from N = φ/(2π): | 4.6×10^-5 rot (rotations)

Slope percentage from [slope percentage] = 100% × tan(θ): | 0.02909 slope% (slope percent)

≈ ( 0.18 ≈ 1/6 ) × minimum angle of resolution for cats ( ≈ 5.5' )

≈ 2.1 × minimum angle of resolution for chimpanzees ( ≈ 28" )