Thrust to Weight Ratio Calculator
Free calculate thrust-to-weight ratio (twr), thrust, weight, and acceleration for rockets, aircraft, and propulsion systems. determine if a vehicle can overcome gravity.
Input Parameters
m/s²
Earth: 9.81 m/s², Moon: 1.62 m/s², Mars: 3.71 m/s²
Results
Enter thrust and weight to calculate TWR
Thrust to Weight Ratio Formula
TWR Formula
TWR = T / W
Where:
- • TWR = thrust-to-weight ratio
- • T = thrust force (N)
- • W = weight force (N)
Acceleration
a = g × (TWR - 1)
TWR Interpretation
- • TWR < 1: Cannot lift off
- • TWR = 1: Hover (no acceleration)
- • TWR > 1: Can accelerate upward
- • TWR > 2: Good for rockets
Common TWR Values
- • Fighter jet: 0.8-1.2
- • Rocket: 1.5-2.5
- • Spacecraft: 2.0-3.0