Kepler Third Law Calculator
Calculate orbital parameters using T² ∝ a³
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Formula
T² = (4π²/GM)a³
T = 2π√(a³/GM)
Where T is orbital period, a is semi-major axis, G is gravitational constant, and M is central mass.
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: University Physics
by Young & Freedman
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.