Arcsecond to Arcminute Converter
Convert arcseconds to arcminutes with our free online angle converter.
Quick Answer
1 Arcsecond = 0.016667 arcminutes
Formula: Arcsecond × conversion factor = Arcminute
Use the calculator below for instant, accurate conversions.
Our Accuracy Guarantee
All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.
Arcsecond to Arcminute Calculator
How to Use the Arcsecond to Arcminute Calculator:
- Enter the value you want to convert in the 'From' field (Arcsecond).
- The converted value in Arcminute will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Angle category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Arcsecond to Arcminute: Step-by-Step Guide
Converting Arcsecond to Arcminute involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
′ = ″ × 0.0166667Example Calculation:
1 ″ = 0.016667 ′
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
Need to convert to other angle units?
View all Angle conversions →What is a Arcsecond and a Arcminute?
1 arcsecond = 1/60 arcminute = 1/3600 degree ≈ 0.000278° ≈ 0.00000485 radians
Symbol: ″ (double prime) or arcsec
Key conversions:
- 60 arcseconds = 1 arcminute
- 3600 arcseconds = 1 degree
- 1 arcsecond ≈ 4.848 × 10⁻⁶ radians
1 arcminute = 1/60 degree = 60 arcseconds ≈ 0.0167° ≈ 0.000291 radians
Symbol: ′ (prime) or arcmin
Note: The Arcsecond is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Arcminute belongs to the imperial/US customary system.
Common Uses and Applications: arcseconds vs arcminutes
Explore the typical applications for both Arcsecond (imperial/US) and Arcminute (imperial/US) to understand their common contexts.
Common Uses for arcseconds
Astronomy: Measuring star positions, planetary motion, stellar parallax, and telescope resolution. Surveying: High-precision land measurements and geodetic surveys. GPS Systems: Coordinate precision (1 arcsecond ≈ 30 meters at equator). Optics: Telescope and microscope angular resolution specifications.
When to Use arcminutes
Astronomy: Measuring apparent sizes of celestial objects and their positions. Surveying: Land measurement and mapping precision. Navigation: GPS coordinates (latitude/longitude precision). Ophthalmology: Visual acuity testing (20/20 vision = 1 arcminute resolution).
Additional Unit Information
About Arcsecond (″)
How do I convert arcseconds to degrees?
Formula: Degrees = Arcseconds ÷ 3600
Examples:
- 3600 arcseconds = 1°
- 1800 arcseconds = 0.5°
- 60 arcseconds = 1 arcminute = 0.0167°
- 1 arcsecond ≈ 0.000278°
Arcseconds to Degrees converter →
How do I convert arcseconds to arcminutes?
Formula: Arcminutes = Arcseconds ÷ 60
Examples:
- 60 arcseconds = 1 arcminute
- 120 arcseconds = 2 arcminutes
- 30 arcseconds = 0.5 arcminutes
- 3600 arcseconds = 60 arcminutes = 1°
Arcseconds to Arcminutes converter →
How big is 1 arcsecond on Earth's surface?
At the equator: 1 arcsecond ≈ 30.9 meters ≈ 101 feet
Latitude (north-south): Always ≈ 30.9 m per arcsecond Longitude (east-west): Varies by latitude:
- Equator: 30.9 m
- 45° latitude: 21.9 m
- 60° latitude: 15.5 m
- 80° latitude: 5.4 m
This is why GPS coordinates to arcsecond precision give location within ~30 meters.
What is stellar parallax in arcseconds?
Stellar parallax is the apparent shift in a star's position as Earth orbits the Sun, measured in arcseconds.
Formula: Distance (parsecs) = 1 / Parallax (arcseconds)
Examples:
- Proxima Centauri: 0.768 arcseconds → 1.30 parsecs (4.24 light-years)
- Sirius: 0.379 arcseconds → 2.64 parsecs (8.6 light-years)
- Alpha Centauri A: 0.742 arcseconds → 1.35 parsecs (4.37 light-years)
- Barnard's Star: 0.547 arcseconds → 1.83 parsecs (5.96 light-years)
The parsec (pc) unit was defined as the distance at which 1 AU creates 1 arcsecond parallax.
About Arcminute (′)
How do I convert arcminutes to degrees?
Formula: Degrees = Arcminutes ÷ 60
Examples:
- 60 arcminutes = 1°
- 30 arcminutes = 0.5° (Moon's diameter)
- 120 arcminutes = 2°
Arcminutes to Degrees converter →
How big is 1 arcminute on Earth?
At the equator: 1 arcminute of latitude or longitude ≈ 1 nautical mile ≈ 1.852 kilometers
Latitude (north-south): Always ≈ 1.852 km per arcminute Longitude (east-west): Varies by latitude:
- Equator: 1.852 km
- 45° latitude: 1.31 km
- 60° latitude: 0.93 km
- Poles: 0 km
How many arcseconds in an arcminute?
1 arcminute = 60 arcseconds
Examples:
- 2 arcminutes = 120 arcseconds
- 0.5 arcminutes = 30 arcseconds
- 10 arcminutes = 600 arcseconds
Arcminutes to Arcseconds converter →
What does 20/20 vision mean in arcminutes?
20/20 vision = ability to distinguish details subtending 1 arcminute at 20 feet
Visual acuity scale:
- 20/10 vision: 0.5 arcminutes (better than normal)
- 20/20 vision: 1 arcminute (normal)
- 20/40 vision: 2 arcminutes (needs glasses)
- 20/200 vision: 10 arcminutes (legally blind)
Better eyesight = smaller arcminute resolution.
Conversion Table: Arcsecond to Arcminute
| Arcsecond (″) | Arcminute (′) |
|---|---|
| 0.5 | 0.008 |
| 1 | 0.017 |
| 1.5 | 0.025 |
| 2 | 0.033 |
| 5 | 0.083 |
| 10 | 0.167 |
| 25 | 0.417 |
| 50 | 0.833 |
| 100 | 1.667 |
| 250 | 4.167 |
| 500 | 8.333 |
| 1,000 | 16.667 |
People Also Ask
How do I convert Arcsecond to Arcminute?
To convert Arcsecond to Arcminute, enter the value in Arcsecond in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our angle converter page to convert between other units in this category.
Learn more →What is the conversion factor from Arcsecond to Arcminute?
The conversion factor depends on the specific relationship between Arcsecond and Arcminute. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.
Can I convert Arcminute back to Arcsecond?
Yes! You can easily convert Arcminute back to Arcsecond by using the swap button (⇌) in the calculator above, or by visiting our Arcminute to Arcsecond converter page. You can also explore other angle conversions on our category page.
Learn more →What are common uses for Arcsecond and Arcminute?
Arcsecond and Arcminute are both standard units used in angle measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our angle converter for more conversion options.
For more angle conversion questions, visit our FAQ page or explore our conversion guides.
Helpful Conversion Guides
Learn more about unit conversion with our comprehensive guides:
📚 How to Convert Units
Step-by-step guide to unit conversion with practical examples.
🔢 Conversion Formulas
Essential formulas for angle and other conversions.
⚖️ Metric vs Imperial
Understand the differences between measurement systems.
⚠️ Common Mistakes
Learn about frequent errors and how to avoid them.
All Angle Conversions
Other Angle Units and Conversions
Explore other angle units and their conversion options:
Verified Against Authority Standards
All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.
National Institute of Standards and Technology — Fundamental physical constants and unit conversions
Bureau International des Poids et Mesures — International System of Units (SI) definitions and standards
International Organization for Standardization — Quantities and units international standards series
Last verified: February 19, 2026