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Angle Converter

Arcsecond to Degree Converter

Convert Arcsecond (") to Degree (°) instantly with our interactive tool, benchmark tables, and detailed unit information.

1 " = 0.0003 °
Editable
"
Input
Auto-Calculated
°
Result
Angle conversion — instant results

Convert Arcsecond to Degree

1 " = 0.0003 °
Arcsecond (") Degree (°)
1 " 0.000278 °
5 " 0.001389 °
10 " 0.002778 °
25 " 0.006944 °
50 " 0.013889 °
100 " 0.027778 °
500 " 0.138889 °
1,000 " 0.277778 °

Convert Degree to Arcsecond

1 ° = 3600.0000 "
Degree (°) Arcsecond (")
1 ° 3,600 "
5 ° 18,000 "
10 ° 36,000 "
25 ° 90,000 "
50 ° 180,000 "
100 ° 360,000 "
500 ° 1,800,000 "
1,000 ° 3,600,000 "

About Arcsecond and Degree

Detailed information about both units of measurement.

ANGULAR UNIT

Arcsecond

"
Definition
One-sixtieth of an arcminute or 1/3,600 of a degree. Used in precision astronomy.
SI / Standard Information
Also called a second of arc. 1 arcsecond = 1/3600 degree. The parsec (parallax arcsecond) is derived from this unit.
Approximate Comparison
One arcsecond is about the apparent size of a US quarter at a distance of 4 km.
Practical Applications
  • Professional astronomical measurements
  • Space telescope resolution (Hubble, JWST)
  • Geodetic surveying
  • Stellar parallax calculation
Real-World Examples
  • The Hubble Space Telescope has 0.05 arcsecond resolution
  • The largest apparent planet (Venus) is about 1 arcminute
  • A human hair at 1 km is about 1 arcsecond wide
ANGULAR UNIT

Degree

°
Definition
The most common angular unit. A full circle is divided into 360 equal parts called degrees.
SI / Standard Information
Not an SI unit but widely used. The 360-degree system originates from ancient Babylonian astronomy and their base-60 number system.
Approximate Comparison
One degree is about the width of a little finger held at arm's length.
Practical Applications
  • Navigation and GPS coordinates
  • Engineering and construction angles
  • Geometry and mathematics education
  • Compass and direction measurement
Real-World Examples
  • A right angle is 90 degrees
  • The Earth's axis is tilted at 23.5 degrees
  • A triangle's interior angles sum to 180 degrees

About Converting Arcsecond to Degree

Our Arcsecond to Degree converter provides instant, accurate conversion between these two essential angle units. Whether you are working in engineering, construction, education, or everyday angle measurement, this tool delivers precise results with zero friction.

The Arcsecond (") is a angular unit of angle. One-sixtieth of an arcminute or 1/3,600 of a degree. Used in precision astronomy. One arcsecond is about the apparent size of a US quarter at a distance of 4 km.

The Degree (°) is a angular unit of angle. The most common angular unit. A full circle is divided into 360 equal parts called degrees. One degree is about the width of a little finger held at arm's length.

Conversion Formula & Worked Examples

The conversion between " and ° uses the following mathematical relationship:

Degree = Arcsecond × 0.000278

Arcsecond = Degree × 3600.000000

Whether you need to convert for professional astronomical measurements or navigation and gps coordinates, our interactive converter provides instant, accurate results.

Example

1 "

=

0.0003 °

Example

5 "

=

0.0014 °

Example

10 "

=

0.0028 °

Reverse Direction

Need to convert Degree back into Arcsecond?

Switch conversion direction to view Degree → Arcsecond tables, benchmarks, and detailed info.

Open Degree → Arcsecond

Practical Use Cases & Applications

" Arcsecond

  • Professional astronomical measurements
  • Space telescope resolution (Hubble, JWST)
  • Geodetic surveying
  • Stellar parallax calculation

° Degree

  • Navigation and GPS coordinates
  • Engineering and construction angles
  • Geometry and mathematics education
  • Compass and direction measurement

Frequently Asked Questions

Common questions about this conversion and related measurement topics.

How do I convert Arcsecond to Degree?
To convert Arcsecond (") to Degree (°), multiply the arcsecond value by the conversion factor. Our converter below handles this instantly — just enter the value in " and the ° result appears in real time.
How many Degrees are in one arcsecond?
One arcsecond (") equals approximately 0.000278 degree (°). This conversion factor is constant and can be used for any arcsecond value.
What is the formula to convert " to °?
The conversion formula is: <strong>Degree = Arcsecond × 0.000278</strong>. For example, 5 " × 0.0003 = 0.0014 °, and 10 " × 0.0003 = 0.0028 °.
Can I convert Degree back to Arcsecond?
Yes! Use the reverse direction on our converter, or visit our dedicated <a href="/angle/degrees-to-arcseconds/" class="text-accent-teal underline">Degree to Arcsecond converter</a>. The reverse conversion factor is approximately 1 ° = 3600.000000 ".
Where is Arcsecond commonly used?
Professional astronomical measurements, Space telescope resolution (Hubble, JWST), Geodetic surveying. One-sixtieth of an arcminute or 1/3,600 of a degree. Used in precision astronomy.
What is the difference between Arcsecond and Degree?
Arcsecond (") and Degree (°) are both units of angle. Arcsecond belongs to the angular system, while Degree belongs to the angular system. Understanding the conversion between them is essential for international work in angle measurement.
What are some real-world examples of arcseconds and degrees?
Arcsecond: The Hubble Space Telescope has 0.05 arcsecond resolution; The largest apparent planet (Venus) is about 1 arcminute Degree: A right angle is 90 degrees; The Earth's axis is tilted at 23.5 degrees

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About This Conversion ℹ

This Arcsecond to Degree converter provides accurate, real-time conversions between these two angle units.

Both units are among the most commonly used angle measurements — rated 6/10 and 10/10 in popularity.

Bookmark this page for quick access to the Arcsecond → Degree converter whenever you need precise unit conversion.

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