Square degrees to steradians
Type a value in deg² to get it in sr instantly.
0.0003046sr
That's 4.8× as wide as the full Moon, while a torch beam is 657× wider. That covers about 0.002424% of everything around you.
Convert the other way: sr to deg²
What it means
How wide is that?
A solid angle describes a cone of directions, not an area. The same solid angle covers more surface the further out you go.
The math
How to convert deg² to sr
To convert square degrees to steradians, multiply by 0.000304617.
Example: 1 deg² × 0.000304617 = 0.000304617 sr.
In the other direction, 1 sr = 3,282.81 deg².
Every unit
Your solid angle in every unit
Tables
deg² to sr conversion table
| deg² | sr |
|---|---|
| 0.001 deg² | 3.046×10⁻⁷ sr |
| 0.01 deg² | 3.046×10⁻⁶ sr |
| 0.1 deg² | 3.046×10⁻⁵ sr |
| 0.5 deg² | 0.000152309 sr |
| 1 deg² | 0.000304617 sr |
| 2 deg² | 0.000609235 sr |
| 3.14 deg² | 0.000956499 sr |
| 6.28 deg² | 0.001913 sr |
| 9.42 deg² | 0.0028695 sr |
| 12.566 deg² | 0.00382782 sr |
sr to deg² conversion table
| sr | deg² |
|---|---|
| 0.001 sr | 3.28281 deg² |
| 0.01 sr | 32.8281 deg² |
| 0.1 sr | 328.281 deg² |
| 0.5 sr | 1,641.4 deg² |
| 1 sr | 3,282.81 deg² |
| 2 sr | 6,565.61 deg² |
| 3.14 sr | 10,308 deg² |
| 6.28 sr | 20,616 deg² |
| 9.42 sr | 30,924 deg² |
| 12.566 sr | 41,251.7 deg² |
Quick answers
Quick answers
- How many sr is 1 deg²?
- 1 deg² is 0.000304617 sr.
- How many sr is 10 deg²?
- 10 deg² is 0.00304617 sr.
The units
About these units
Square degrees (deg²)
How sky surveys report their coverage. The sky is 41,253 of them.
Steradians (sr)
The SI unit: area on a sphere divided by the radius squared.
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