Use this advanced page when you need center-to-vertex distance for regular tetrahedron modeling, bounding spheres, or geometric validation.
CAD and geometry users deriving vertex reach from edge length for enclosing sphere and clearance checks.
Reach Precision Toggle
Switch between quick design view and strict readout before using the radius.
Fast readout favors concise display for rapid decisions.
circumradius = edge x sqrt(6) / 4The circumradius reaches from the tetrahedron center to any vertex.
| edge | circumradius |
|---|---|
| 6 | 3.6742 |
| 6.02 | 3.6865 |
If you need the inscribed-sphere radius instead, open Regular Tetrahedron Inradius Calculator.
If you move from solid radius to face area workflows, use Regular Hexagon Area Calculator.
If your model transitions to prism surfaces, calculate with Right Triangular Prism Surface Area Calculator.
If edge uncertainty needs tolerance bands, apply Percentage Calculator.
If formulas include radicals from edge transforms, use Square Root Calculator.
If solid dimensions are sourced in another unit set, convert with CM to Inches Converterbefore substitution.
This tool works well for focused work where you only want one formula and one answer path around regular tetrahedron height.
Next: regular tetrahedron surface area.
Next: regular tetrahedron volume.
Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.