Convert Steradian to Microsteradian
Convert steradians to microsteradians by entering a value below.
How to Convert Steradians to Microsteradians
The steradian and microsteradian are both units of solid angle. By definition, 1 steradian equals exactly 1000000 microsteradians. This means to convert steradians to microsteradians, you multiply by 1000000.
Formula
Step-by-Step Example
Convert 5 sr to microsteradians:
We need to convert steradians to microsteradians
Since 1 sr = 1000000 μsr, multiply by 1000000
5 × 1000000 = 5000000
5 sr = 5000000 μsr
Steradian to Microsteradian Conversion Table
Quick reference table for common steradian to microsteradian conversions. Click any value for detailed calculation.
| Steradians (sr) | Microsteradians (μsr) |
|---|---|
| 0.1 sr | 100000 μsr |
| 0.5 sr | 500000 μsr |
| 1 sr | 1000000 μsr |
| 2 sr | 2000000 μsr |
| 5 sr | 5000000 μsr |
| 10 sr | 10000000 μsr |
| 25 sr | 25000000 μsr |
| 50 sr | 50000000 μsr |
| 100 sr | 100000000 μsr |
About These Units
Steradian (sr)
The steradian (sr) is the SI unit of solid angle—the 3D analog of the radian. One steradian is the solid angle subtended by a spherical cap with area r² on a sphere of radius r. A complete sphere subtends 4π ≈ 12.566 steradians. Used in radiometry, photometry, and antenna theory.
Microsteradian (μsr)
A microsteradian (μsr) equals 10⁻⁶ steradians or about 11.8 square arcminutes. Used in astronomy for field of view specifications, laser beam divergence measurements, and telescope aperture calculations. A typical star appears as ~1 μsr from Earth.
Frequently Asked Questions
How do I convert steradians to microsteradians?
To convert steradians to microsteradians, multiply the value by 1000000. For example, 10 sr = 10000000 μsr.
How many microsteradians are in 1 steradian?
1 steradian equals 1000000 microsteradians.
What is the formula for steradians to microsteradians?
The formula is: μsr = sr × 1000000.