Turn to Arcsecond Converter
Convert turns to arcseconds with our free online angle converter.
Quick Answer
1 Turn = 1296000 arcseconds
Formula: Turn × conversion factor = Arcsecond
Use the calculator below for instant, accurate conversions.
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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.
Turn to Arcsecond Calculator
How to Use the Turn to Arcsecond Calculator:
- Enter the value you want to convert in the 'From' field (Turn).
- The converted value in Arcsecond 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 Turn to Arcsecond: Step-by-Step Guide
Converting Turn to Arcsecond involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
″ = turn × 1296000Example Calculation:
1 turn = 1296000 ″
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 Turn and a Arcsecond?
1 turn = 1 complete circular rotation = 360 degrees = 2π radians ≈ 6.2832 radians
Key conversions:
- 1 turn = 360 degrees
- 1 turn = 2π ≈ 6.2832 radians
- 1 turn = 400 gradians (or gons)
- 1 turn = 4 quadrants
- 1 turn = 1 revolution
- 0.5 turn = 180 degrees (half turn)
- 0.25 turn = 90 degrees (quarter turn)
Symbol: turn (no standard abbreviation)
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
Note: The Turn is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Arcsecond belongs to the imperial/US customary system.
Common Uses and Applications: turns vs arcseconds
Explore the typical applications for both Turn (imperial/US) and Arcsecond (imperial/US) to understand their common contexts.
Common Uses for turns
CSS/Web Design: CSS3 transform property uses "turn" unit for rotations (e.g., rotate(0.5turn)). Engineering: Describing screw threads, bolt rotations, valve operations ("turn clockwise 2 turns"). Dance and Sports: Figure skating jumps, gymnastics rotations, dance pirouettes. Everyday Language: "Turn the key 3 turns," "Turn the screw half a turn."
When to Use 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.
Additional Unit Information
About Turn (turn)
How do I convert turns to degrees?
Formula: Degrees = Turns × 360
Examples:
- 1 turn = 360°
- 0.5 turns = 180° (half turn)
- 0.25 turns = 90° (quarter turn)
- 0.75 turns = 270° (three-quarter turn)
- 2 turns = 720°
- 3.5 turns = 1260°
How do I convert turns to radians?
Formula: Radians = Turns × 2π ≈ Turns × 6.2832
Examples:
- 1 turn = 2π ≈ 6.283 radians
- 0.5 turns = π ≈ 3.142 radians
- 0.25 turns = π/2 ≈ 1.571 radians
- 2 turns = 4π ≈ 12.566 radians
- 0.75 turns = 3π/2 ≈ 4.712 radians
What's the difference between turns and revolutions?
No practical difference - they're the same measurement:
Turn:
- Emphasizes single rotational action
- Common in everyday language ("turn the knob")
- Used in CSS and web design
- More intuitive for describing motion
Revolution:
- Often used for continuous rotation (RPM = revolutions per minute)
- Common in engineering and physics
- Traditional term in astronomy (planetary revolutions)
- Emphasizes cyclical motion
Both equal: 360 degrees = 2π radians = 1 complete rotation
Choose based on context: "turns" for discrete rotations, "revolutions" for speed and continuous motion.
How do I use turns in CSS?
CSS turn unit makes rotations more readable:
Syntax: transform: rotate(Nturn);
Common patterns:
/* Flip element upside down */
.flip { transform: rotate(0.5turn); }
/* Rotate right 90° */
.rotate-right { transform: rotate(0.25turn); }
/* Full rotation animation */
@keyframes spin {
from { transform: rotate(0turn); }
to { transform: rotate(1turn); }
}
/* Multiple rotations */
.spin-twice { transform: rotate(2turn); }
Benefits:
- More intuitive than degrees (1turn vs 360deg)
- Easier to specify fractions (0.5turn vs 180deg)
- Clearer intent in code
- No need to calculate degree values
Browser support: All modern browsers (Chrome, Firefox, Safari, Edge) support turn unit in CSS3.
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.
Conversion Table: Turn to Arcsecond
| Turn (turn) | Arcsecond (″) |
|---|---|
| 0.5 | 648,000 |
| 1 | 1,296,000 |
| 1.5 | 1,944,000 |
| 2 | 2,592,000 |
| 5 | 6,480,000 |
| 10 | 12,960,000 |
| 25 | 32,400,000 |
| 50 | 64,800,000 |
| 100 | 129,600,000 |
| 250 | 324,000,000 |
| 500 | 648,000,000 |
| 1,000 | 1,296,000,000 |
People Also Ask
How do I convert Turn to Arcsecond?
To convert Turn to Arcsecond, enter the value in Turn 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 Turn to Arcsecond?
The conversion factor depends on the specific relationship between Turn and Arcsecond. 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 Arcsecond back to Turn?
Yes! You can easily convert Arcsecond back to Turn by using the swap button (⇌) in the calculator above, or by visiting our Arcsecond to Turn converter page. You can also explore other angle conversions on our category page.
Learn more →What are common uses for Turn and Arcsecond?
Turn and Arcsecond 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
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📚 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.
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Other Angle Units and Conversions
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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