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Angle converter

milliradian to semicircle

Convert milliradian (mrad) to semicircle (semicircle). Use an editable angle converter, conversion formula, and reference table.

0.0003183098862

1 mrad = 0.0003183098862 semicircle

Calculated in your browser

Conversion formula

semicircle = mrad × 0.0003183098862

One milliradian equals 0.0003183098862 semicircle. Multiply your value in milliradian by this factor to get semicircle. For the reverse conversion, divide by the same factor.

Worked example

To convert 5 milliradian:
5 × 0.0003183098862 = 0.001591549431 semicircle

Conversion table

milliradian (mrad)semicircle (semicircle)
0.010.000003183098862
0.10.00003183098862
10.0003183098862
20.0006366197724
50.001591549431
100.003183098862
250.007957747155
500.01591549431
1000.03183098862
10000.3183098862

About these measurements

An angle describes rotation between directions.

The base reference used here is the radian. One milliradian is 0.001 base units; one semicircle is 3.141592654 base units.

Important distinctions

A full turn is 360 degrees or 2π radians. Signed angles are permitted.

Precision

The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.

Common questions

How do I convert mrad to semicircle?

Multiply the quantity in mrad by 0.0003183098862. You can also type the value into the converter above.

Can I reverse the conversion?

Yes. Use the swap button or open the semicircle to milliradian converter.

Reference

NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.

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