Convert Hemisphere to Square Degree
Enter the number of hemispheres that you want to convert to square degrees.
How to Convert Hemispheres to Square Degrees
The hemisphere and square degree are both units of solid angle. 1 hemisphere equals 20626.481964 square degrees. This means to convert hemispheres to square degrees, you multiply by 20626.481964.
Formula
Step-by-Step Example
Convert 5 hemisphere to square degrees:
We need to convert hemispheres to square degrees
Since 1 hemisphere = 20626.481964 deg², multiply by 20626.481964
5 × 20626.481964 = 103132.40982
5 hemisphere = 103132.40982 deg²
Hemisphere to Square Degree Conversion Table
Quick reference table for common hemisphere to square degree conversions. Click any value for detailed calculation.
| Hemispheres (hemisphere) | Square Degrees (deg²) |
|---|---|
| 0.1 hemisphere | 2062.6481964 deg² |
| 0.5 hemisphere | 10313.240982 deg² |
| 1 hemisphere | 20626.481964 deg² |
| 2 hemisphere | 41252.963928 deg² |
| 5 hemisphere | 103132.40982 deg² |
| 10 hemisphere | 206264.81964 deg² |
| 25 hemisphere | 515662.0491 deg² |
| 50 hemisphere | 1031324.0982 deg² |
| 100 hemisphere | 2062648.1964 deg² |
About These Units
Hemisphere (hemisphere)
A hemisphere equals 2π steradians (≈6.283 sr)—half of a complete sphere. Represents the visible sky from any point on Earth, or one side of a surface. Used in lighting calculations: a horizontal surface receives radiation from a hemisphere of solid angle.
Square Degree (deg²)
A square degree (deg² or sq.deg.) equals (π/180)² ≈ 0.000305 steradians. A complete sphere covers 41,253 square degrees. The full Moon is about 0.2 deg². Common in astronomy: survey areas, galaxy cluster sizes, and cosmic microwave background maps.
Frequently Asked Questions
How do I convert hemispheres to square degrees?
To convert hemispheres to square degrees, multiply the value by 20626.481964. For example, 10 hemisphere = 206264.81964 deg².
How many square degrees are in 1 hemisphere?
1 hemisphere equals 20626.481964 square degrees.
What is the formula for hemispheres to square degrees?
The formula is: deg² = hemisphere × 20626.481964.