Lbs Thrust to Horsepower Calculator

Lbs Thrust to Horsepower Calculator

Engine Details

Enter thrust value in pounds and input speed in MPH. The calculator will determine the equivalent horsepower based on these values. For static thrust (no forward motion), only thrust input is needed.

  • Inputs: Thrust = 1,000 lbs, Velocity = 300 mph
  • Calculation: Velocity (ft/s) = 300 × 1.46667 = 440 ft/s Horsepower = (1000 × 440) / 550 = 800 hp
  • Result: Horsepower = 800 hp

Lbs Thrust to Horsepower Conversion Chart

Thrust (lbs)HorsepowerCalculation
302(30 × 375) ÷ 375 = 2 HP
504(50 × 375) ÷ 375 = 4 HP
554(55 × 375) ÷ 375 = 4 HP
806(80 × 375) ÷ 375 = 6 HP
1008(100 × 375) ÷ 375 = 8 HP
1159(115 × 375) ÷ 375 = 9 HP
1,000800(1,000 × 375) ÷ 375 = 800 HP
2,0001,600(2,000 × 375) ÷ 375 = 1,600 HP
5,0004,000(5,000 × 375) ÷ 375 = 4,000 HP
10,0008,000(10,000 × 375) ÷ 375 = 8,000 HP
20,00016,000(20,000 × 375) ÷ 375 = 16,000 HP
50,00040,000(50,000 × 375) ÷ 375 = 40,000 HP
100,00080,000(100,000 × 375) ÷ 375 = 80,000 HP

How to Convert Lbs Thrust to Horsepower

To convert thrust to horsepower, multiply the thrust in pounds by the speed in MPH, then divide by 375. This formula accounts for the relationship between force, velocity, and power output. For static calculations, one pound of thrust equals approximately 0.24 horsepower.

  • Inputs: Thrust = 800 lbs, Velocity = 150 mph
  • Calculation: Velocity (ft/s) = 150 × 1.46667 = 220 ft/s Horsepower = (800 × 220) / 550 = 320 hp
  • Result: Horsepower = 320 hp

Thrust to Horsepower Conversion Formula

Moving Thrust HP = (Thrust × Speed) ÷ 375
Static Thrust HP = Thrust × 0.24

Where:

Thrust = Pounds of thrust
Speed = Miles per hour
375 = Conversion constant

Jet Engine

  • Inputs: Thrust = 8000 lbs, Speed = 500 MPH
  • Calculations: (8000 × 500) ÷ 375
  • Result: 10,667 HP

Small Turboprop

  • Inputs: Thrust = 2500 lbs, Speed = 250 MPH
  • Calculations: (2500 × 250) ÷ 375
  • Result: 1,667 HP

UAV Engine

  • Inputs: Thrust = 500 lbs, Speed = 150 MPH
  • Calculations: (500 × 150) ÷ 375
  • Result: 200 HP

Static Engine Test

  • Inputs: Thrust = 4000 lbs, Speed = 0 MPH
  • Calculations: 4000 × 0.24
  • Result: 960 HP

RC Aircraft

  • Inputs: Thrust = 50 lbs, Speed = 60 MPH
  • Calculations: (50 × 60) ÷ 375
  • Result: 8 HP

What is Lbs Thrust and Horsepower?

Thrust measures the force produced by an engine pushing an aircraft forward, while Horsepower represents the rate of work or power output. One horsepower equals 550 foot-pounds per second of work.

1 HP = 550 ft-lbs/second
Static Thrust Ratio = 4.2 lbs/HP

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