Steradians to full spheres
Type a value in sr to get it in spheres instantly.
0.07958spheres
That's 5× as wide as a torch beam, while a floodlight is 1.4× wider. That covers about 7.958% of everything around you.
Convert the other way: spheres to sr
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 sr to spheres
To convert steradians to full spheres, multiply by 0.0795775.
Example: 1 sr × 0.0795775 = 0.0795775 spheres.
In the other direction, 1 spheres = 12.5664 sr.
Every unit
Your solid angle in every unit
Tables
sr to spheres conversion table
| sr | spheres |
|---|---|
| 0.001 sr | 7.958×10⁻⁵ spheres |
| 0.01 sr | 0.000795775 spheres |
| 0.1 sr | 0.00795775 spheres |
| 0.5 sr | 0.0397887 spheres |
| 1 sr | 0.0795775 spheres |
| 2 sr | 0.159155 spheres |
| 3.14 sr | 0.249873 spheres |
| 6.28 sr | 0.499747 spheres |
| 9.42 sr | 0.74962 spheres |
| 12.566 sr | 0.999971 spheres |
spheres to sr conversion table
| spheres | sr |
|---|---|
| 0.001 spheres | 0.0125664 sr |
| 0.01 spheres | 0.125664 sr |
| 0.1 spheres | 1.25664 sr |
| 0.5 spheres | 6.28319 sr |
| 1 spheres | 12.5664 sr |
| 2 spheres | 25.1327 sr |
| 3.14 spheres | 39.4584 sr |
| 6.28 spheres | 78.9168 sr |
| 9.42 spheres | 118.375 sr |
| 12.566 spheres | 157.909 sr |
Quick answers
Quick answers
- How many spheres is 1 sr?
- 1 sr is 0.0795775 spheres.
- How many spheres is 10 sr?
- 10 sr is 0.795775 spheres.
The units
About these units
Steradians (sr)
The SI unit: area on a sphere divided by the radius squared.
Full spheres (spheres)
The whole of space around a point: 4π steradians.
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