Arcminutes to Arcseconds Converter
Enter a value to instantly convert between angle units.
1 Arcminute = 60 Arcsecond
Key Formulas
Degree → Radian
rad = ° × 0.0174533Radian → Degree
° = rad × 57.2958Degree → Gradian
grad = ° × 1.11111Gradian → Degree
° = grad × 0.9Formula
arcseconds = arcminutes × 60Telescope pointing models, astrometric catalogs, and high-precision surveying adjustment programs work in arcseconds for all their angle components. When DMS angle data (degrees, arcminutes, arcseconds) is processed, the arcminute component must be converted to arcseconds and added to the arcsecond component to get a single value. A coordinate error of 3 arcminutes becomes 180 arcseconds in the adjustment program's residuals, allowing comparison against the 5-arcsecond tolerance.
Source: ISO 80000-3:2019 (Quantities and units — Space and time)
Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
One arcminute — 60 arcseconds, the base conversion that defines the sexagesimal subdivision within the DMS system.
1 ′ = 60 ″
A 5 arcminute telescope pointing error — 300 arcseconds, compared against a 10-arcsecond RMS requirement to decide if re-slewing is needed.
5 ′ = 300 ″
Half an arcminute — 30 arcseconds, the angular resolution of a 0.5 arcminute-precision survey instrument expressed in the program's arcsecond units.
0.5 ′ = 30 ″
A 34-arcminute component of a star's right ascension — 2,040 arcseconds, added to the arcsecond component in an astrometric catalog entry.
34 ′ = 2040 ″