Arcminutes to Arcseconds Converter
Enter the angle in arcminutes below to convert it to arcseconds.
Convert Arcminutes to Arcseconds
Enter a value in arcminutes (′) to convert to arcseconds (″).
Minute of Arc to Second of Arc Conversion Table
Table showing various minute of arc measurements converted to arcseconds. Click any preset value or arrow to load it into the converter.
How to Convert Arcminutes to Arcseconds
To convert arcminutes to arcseconds, multiply the angle by the following conversion ratio: 60 arcseconds/minute of arc.
Since one minute of arc is equal to 60 arcseconds, you can use this simple formula to convert:
The angle in arcseconds is equal to the angle in arcminutes multiplied by 60.
For example, here's how to convert 5 arcminutes to arcseconds using the formula above.
How Many Arcseconds Are in a Minute of Arc?
There are 60 arcseconds in a minute of arc, which is why we use this value in the formula above.
Our minute of arc to second of arc calculator automatically converts your angle measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Arcminutes and arcseconds are both units used to measure angle. Keep reading to learn more about each unit.
What Is a Minute of Arc?
A minute of arc is a unit of angle equal to 1/60 of a degree (0.0166667 °). 1/60 of a degree. [1]
The minute of arc is classified as a standard unit of angle. Arcminutes can be abbreviated as ′; for example, 1 minute of arc can be written as 1 ′.
When working with arcminutes (′) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, arcminutes (′) are widely used across standard angle applications within international standard workflows, engineering documentation, and technical data sheets.
What Is a Second of Arc?
A second of arc is a unit of angle equal to 1/3,600 of a degree (0.000277778 °). 1/3600 of a degree. [2]
The second of arc is classified as a standard unit of angle. Arcseconds can be abbreviated as ″; for example, 1 second of arc can be written as 1 ″.
When working with arcseconds (″) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, arcseconds (″) are widely used across fine-tolerance laboratory, analytical, and micro-scale angle measurements within international standard workflows, engineering documentation, and technical data sheets.
When converting angle between arcminutes (′) and arcseconds (″), keep full floating-point precision (1 ′ = 60 ″; 1 ″ = 0.0166667 ′) during intermediate calculations and round only the final second of arc figure to match your instrument tolerance.
More Minute of Arc & Second of Arc Conversions
Need to calculate in the opposite direction? Use our arcseconds to arcminutes calculator to switch your starting unit immediately. You can also explore related tools such as converting arcseconds to arcminutes, converting arcminutes to degrees, or converting degrees to radians.
Frequently Asked Questions
References
- [1]NIST CUU StandardNIST CUU (Non-SI Units Accepted for Use (deg, arcmin, arcsec))·Angle Metrology Standard — Arcminutes (′) to Arcseconds (″)
- [2]NIST SI SpecificationNIST SI (SI Coherent Unit: Radian (rad))·Unit Specifications: Minute of Arc (′) & Second of Arc (″)
- [3]NIST SP 811 ReferenceNIST SP 811 (NIST SP 811 App. B.9 (Plane Angle))·Conversion Factors & Mathematical Basis (′ to ″)