Roche Limit Calculator

Calculate the tidal disruption radius

Primary Body Mass Unit

Primary Body Mass

Radius Unit

Primary Body Radius

Secondary Body Density (kg/m³)

Enter values to calculate

Rigid body: d = R(2ρM/ρm)^(1/3)

Fluid body: d = 2.44R(ρM/ρm)^(1/3)

Where R is primary radius, ρM is primary density, and ρm is secondary density.

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: University Physics

by Young & Freedman

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.