28 Arc Seconds to Radians

28" ≈ 0.00013575 rad

Calculation: rad = 28" × 4.84814 × 10⁻⁶ ≈ 0.00013575 rad

Arc Second to Radian Converter

Choose the type of measurement to convert
Select the source unit to convert from
Select the target unit to convert to
Enter a numeric value or fraction to convert
Sig. Figures:

How wide is 28"?

28 arc second (0.008 degrees) is comparable to the precision of a telescope crosshair, an almost imperceptible angle.

What does 28" look like?

Illustration of a telescope crosshair reticle
28 arc second (0.008 degrees) is comparable to the precision of a telescope crosshair, an almost imperceptible angle.

How to Convert Arc Second to Radian

1 arc second = 4.84814 × 10-6 radians

Radian = Arc Second × 4.84814 × 10-6

Example: 28" × 4.84814 × 10-6 = 0.00013575 rad

Reverse Conversion

To convert radians back to arc seconds:

  • Remember, 1 radian equals 206265 arc seconds.
  • To convert 0.00013575 rad to", multiply 0.00013575 x 206265, resulting in 28".

28 " is also equal to:

  • 0.0077778 degree
  • 0.008642 gradian

Frequently Asked Questions

How much is 28 arc seconds in radians?

28 arc seconds equals 0.00013575 radians. This is calculated by multiplying 28 by the conversion factor 4.84814 × 10⁻⁶.

What does 28 arc seconds look like in radians?

28 arc seconds equals 0.00013575 radians, a conversion used in navigation, trigonometry, and engineering design.

How do you calculate 28 arc seconds to radians?

Multiply 28 by the conversion factor 4.84814 × 10⁻⁶. The calculation is 28 × 4.84814 × 10⁻⁶ = 0.00013575 radians. This factor is defined by international measurement standards.

Share This Calculation

28 arc seconds = 0.000135748 radians
28 arc seconds = 0.000135748 radians — conversion chart

Nearby Conversions

18 arc seconds8.727 × 10⁻⁵ radians 19 arc seconds9.211 × 10⁻⁵ radians 20 arc seconds9.696 × 10⁻⁵ radians 21 arc seconds0.0001018 radians 22 arc seconds0.0001067 radians 23 arc seconds0.0001115 radians 24 arc seconds0.0001164 radians 25 arc seconds0.0001212 radians 26 arc seconds0.0001261 radians 27 arc seconds0.0001309 radians 29 arc seconds0.0001406 radians 30 arc seconds0.0001454 radians 31 arc seconds0.0001503 radians 32 arc seconds0.0001551 radians 33 arc seconds0.00016 radians 34 arc seconds0.0001648 radians 35 arc seconds0.0001697 radians 36 arc seconds0.0001745 radians 37 arc seconds0.0001794 radians 38 arc seconds0.0001842 radians

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

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.