Radian to Milliradian Converter

Angle Converter

14 units available

Decimals:

From

To

1,000

1 rad = 1,000 mrad

Formula:

mrad = rad × 1,000

With your value: 1 rad = 1,000 mrad

Other Radian to Milliradian conversions

2 rad to mrad 3 rad to mrad 4 rad to mrad 5 rad to mrad 6 rad to mrad 7 rad to mrad 8 rad to mrad

Radian to Milliradian Conversion Table

Radian (rad)	Milliradian (mrad)
0.5	500
1	1,000
2	2,000
5	5,000
10	10,000
15	15,000
20	20,000
25	25,000
50	50,000
100	100,000
250	250,000
500	500,000
1000	1,000,000

Milliradian to Radian Conversion Table

Milliradian (mrad)	Radian (rad)
0.5	0.0005
1	0.001
2	0.002
5	0.005
10	0.01
15	0.015
20	0.02
25	0.025
50	0.05
100	0.1
250	0.25
500	0.5
1000	1

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Radian (rad)

Angle

Exact conversion

The radian is the coherent SI unit of plane angle; the degree is exactly π/180 rad and is accepted for use with the SI.

Source: Units accepted for use with the SI, SI Brochure Table 8

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Milliradian (mrad)

Angle

Exact conversion

The radian is the coherent SI unit of plane angle; the degree is exactly π/180 rad and is accepted for use with the SI.

Source: Units accepted for use with the SI, SI Brochure Table 8

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Radian to Milliradian

To convert from Radian (rad) to Milliradian (mrad), multiply the value by 1,000.

Formula: mrad = rad × 1,000

Reverse: rad = mrad × 0.001

Step-by-Step Example

Start with your value in Radian. For example: 5 rad
Multiply by the conversion factor: 5 x 1,000
The result is: 5,000 mrad

About Radian

The radian is the SI unit of angular measurement. One radian equals approximately 57.296 degrees.

Fun Fact: A full circle contains exactly 2π radians.

Common uses: mathematics, physics, engineering.

About Milliradian

The milliradian (mrad) is a unit of plane angle. One milliradian equals 0.05729577951 radians. UnitConvertLab converts it against every other angle unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: angle calculations, engineering and science, education.

Frequently Asked Questions

How many Milliradian are in 1 Radian?

There are exactly 1,000 Milliradian in 1 Radian. This means the conversion factor from Radian to Milliradian is 1,000.

What is the formula to convert Radian to Milliradian?

The formula to convert Radian to Milliradian is: mrad = rad × 1,000. For example, to convert 10 Radian to Milliradian, you would multiply 10 by 1,000.

What is a Radian?