0.5 Degrees to Seconds

0.5° = 1800"

Calculation: " = 0.5° × 3600 = 1800"

Degree to Second Converter

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Sig. Figures:

How wide is 0.5°?

0.5 degrees is comparable to the precision of a telescope crosshair, an almost imperceptible angle.

What does 0.5° look like?

Illustration of a telescope crosshair reticle
0.5 degrees is comparable to the precision of a telescope crosshair, an almost imperceptible angle.

Did you know? Full Moon apparent size is 0.5°.

The Moon subtends about 0.5° of arc in the sky — you can cover it with your pinky finger at arm's length.

How to Convert Degree to Second

1 degree = 3600 seconds

Second = Degree × 3600

Example: 12° × 3600 = 1800"

Reverse Conversion

To convert seconds back to degrees:

  • Remember, 1 second equals 0.000277778 degrees.
  • To convert 1800" to°, multiply 1800 x 0.000277778, resulting in 12°.

12 ° is also equal to:

About these units

Degree: The degree (°) is a non-SI unit of plane angle defined as 1/360 of a full rotation.It is accepted for use with the SI due to its long-standing practical importance in navigation, surveying, engineeri...

Second: An arcsecond (second of arc) is 1/60 of an arcminute.It is common in astronomy, surveying, astrometry, and precision optics for high-precision angles.

Frequently Asked Questions

How much is 0.5 degrees in seconds?

0.5 degrees equals 1800 seconds. This is calculated by multiplying 0.5 by the conversion factor 3600.

What does 0.5 degrees look like in seconds?

0.5 degrees (1800 seconds) is a very small angle, barely perceptible to the human eye.

How do you calculate 0.5 degrees to seconds?

Multiply 0.5 by the conversion factor 3600. The calculation is 0.5 × 3600 = 1800 seconds. This factor is defined by international measurement standards.

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0.5 degrees = 1800 seconds
0.5 degrees = 1800 seconds — conversion chart

Nearby Conversions

0.1 degrees360 seconds 0.2 degrees720 seconds 0.3 degrees1080 seconds 0.4 degrees1440 seconds 0.6 degrees2160 seconds 0.7 degrees2520 seconds 0.8 degrees2880 seconds 0.9 degrees3240 seconds 1 degree3600 seconds 1.1 degrees3960 seconds 1.2 degrees4320 seconds 1.3 degrees4680 seconds 1.4 degrees5040 seconds 1.5 degrees5400 seconds

For general conversions between degrees and seconds, see the degrees to seconds converter.

Also convert Degrees to:

Conversion factors verified against BIPM, ISO 80000-3 1 turn = 2π rad = 360° (exact, ISO 80000-3). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.