240 Arc Seconds to Radians

240" ≈ 0.0011636 rad

Calculation: rad = 240" × 4.84814 × 10⁻⁶ ≈ 0.0011636 rad

Arc Second to Radian Converter

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Sig. Figures:

How wide is 240"?

240 arc second (0.067 degrees) is comparable to the precision of a telescope crosshair, an almost imperceptible angle.

What does 240" look like?

Illustration of a telescope crosshair reticle
240 arc second (0.067 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: 240" × 4.84814 × 10-6 = 0.0011636 rad

Reverse Conversion

To convert radians back to arc seconds:

  • Remember, 1 radian equals 206265 arc seconds.
  • To convert 0.0011636 rad to", multiply 0.0011636 x 206265, resulting in 240".

240 " is also equal to:

  • 0.066667 degree
  • 0.074074 gradian
  • 0.00018519 turn

Frequently Asked Questions

How much is 240 arc seconds in radians?

240 arc seconds equals 0.0011636 radians. This is calculated by multiplying 240 by the conversion factor 4.84814 × 10⁻⁶.

What does 240 arc seconds look like in radians?

240 arc seconds equals 0.0011636 radians, a conversion used in navigation, trigonometry, and engineering design.

How do you calculate 240 arc seconds to radians?

Multiply 240 by the conversion factor 4.84814 × 10⁻⁶. The calculation is 240 × 4.84814 × 10⁻⁶ = 0.0011636 radians. This factor is defined by international measurement standards.

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240 arc seconds = 0.00116355 radians
240 arc seconds = 0.00116355 radians — conversion chart

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
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.