Gravitational Force Calculator: Find Force Between Masses

Gravitational Force Calculator

F = G·m₁·m₂ / r² • Unit conversion • Ajax loading • Live update

Live

⚖️ Mass 1 (m₁)

Mass must be > 0 for a force result.

⚖️ Mass 2 (m₂)

Mass must be > 0 for acceleration outputs.

📏 Separation distance (r)

r must be > 0.

🧮 Gravitational constant (G)

G N·m²/kg²

Custom G must be > 0.

Quick summary

Enter m₁, m₂, and r to compute gravitational force.

Force (N)

—N

Force (lbf)

—lbf

Acceleration on m₂ (a₂)

—m/s²

Acceleration on m₁ (a₁)

—m/s²

Updating…

Hard reset: cancels pending updates and clears everything on the first click.

Convert wavelength to photon energy using E=hc/λ. Supports nm, μm, m and outputs eV or joules.

Calculate velocity from distance and time, or using kinematics. Outputs m/s, km/h, mph with conversions.

Calculate acceleration using change in velocity over time, or kinematics formulas. Supports SI units and m/s².

Calculate pressure using P=F/A. Supports Pa, kPa, bar, psi, and unit conversions for force and area.

Calculate density, mass, or volume using ρ=m/V. Works for solids, liquids, and gases with unit support.

Calculate kinetic energy from mass and velocity. Get joules instantly and compare speeds with accurate results.

Calculate gravitational potential energy from mass, height, and gravity. Get results in joules with unit support.

Calculate work (J) using force, distance, and angle. Supports horizontal, vertical, and angled forces.

Calculate work done and power output from force, distance, time, and angle. Outputs joules and watts.