Solid Angle Converter
Convert between steradians and square degrees, accurate to real-world standards.
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About Solid Angle conversion
Solid angle measures how large an object looks from a point, steradians (SI) for 3D and square degrees for astronomy and lighting. Fiction Units converts between them so you can switch between scientific papers and star charts.
One steradian is about 3282.8 square degrees, and a full sphere is 4π steradians (about 41253 deg²), handy for checking beam coverage.
Units supported: Steradians, millisreradians, square degrees (1 sr ≈ 3282.8 deg²).
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Frequently asked questions
What units can I convert with the Solid Angle converter?
Steradians, millisreradians, square degrees (1 sr ≈ 3282.8 deg²).
How accurate is this solid angle converter?
This converter uses standard international definitions for every solid angle unit, so results are precise to several decimal places, accurate enough for cooking, travel, homework, or any everyday use.
Can I convert in both directions?
Yes, enter a value in either field and the other updates instantly. You can also tap the swap button to flip the two units, or use the copy-link button to share this exact conversion.