Open this calculator for cases where a small arithmetic slip would otherwise force a full restart around regular heptagon circumradius.
Enter job values, review the estimate, then use the decision hints before ordering or quoting.
circumradius = side / (2 x sin(pi / 7))The circumradius is the distance from the polygon center to any vertex in a regular heptagon.
Each side and angle must match for the formula to hold.
Next: regular dodecagon circumradius.
Next: regular hendecagon circumradius.
This tool works well for focused work where you only want one formula and one answer path around regular heptagon apothem.
Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.