Enter the horsepower (hp) into the calculator. The calculator will evaluate the Gph given the horsepower.

Hp To Gph Formula

GPH = HP /10


  • GPH is the Hp To Gph (gallons per hour)
  • HP is the horsepower (hp)

To calculate gallons per hour from horsepower, simply divide the horsepower by 10.

How to Calculate Hp To Gph?

The following steps outline how to calculate the Hp To Gph.

  1. First, determine the horsepower (hp). 
  2. Next, gather the formula from above = GPH = HP /10.
  3. Finally, calculate the Hp To Gph.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

horsepower (hp) = 456


What does GPH stand for in the context of this calculator?
GPH stands for Gallons Per Hour, which is a measure of the fuel consumption rate in gallons for each hour of engine operation based on the horsepower.

Why is it important to know the GPH for a given horsepower?
Knowing the GPH for a given horsepower is crucial for estimating fuel consumption, which helps in planning fuel needs for trips, budgeting for fuel costs, and optimizing engine performance to reduce unnecessary fuel expenditure.

Can the HP to GPH formula be used for any type of engine?
The HP to GPH formula provided is a general estimation and can be used for a broad range of engines. However, specific engine designs and operating conditions can significantly affect actual fuel consumption rates, so it’s always best to consult manufacturer data or perform empirical measurements for precise calculations.

Is there a way to improve the fuel efficiency reflected by the GPH value?
Yes, improving fuel efficiency can be achieved through regular engine maintenance, optimizing the engine load, ensuring the use of the correct type of fuel, and implementing fuel-efficient driving or operating habits. These measures can help lower the GPH value, reflecting better fuel efficiency.