Enter the area of piston (in^2) and the equivalent piston speed (ft/min) into the calculator to determine the Steam Engine Power.

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## Steam Engine Power Formula

The following formula is used to calculate the Steam Engine Power.

Pse = 7*A*S /33,000

- Where Pse is the Steam Engine Power (HP)
- A is the area of piston (in^2)
- S is the equivalent piston speed (ft/min)

To calculate steam engine power, multiply the area of the piston by the equivalent piston speed, multiply by 7, then divide by 33,000.

## How to Calculate Steam Engine Power?

The following two example problems outline how to calculate the Steam Engine Power.

**Example Problem #1:**

- First, determine the area of piston (in^2). In this example, the area of piston (in^2) is measured to be 16.
- Next, determine the equivalent piston speed (ft/min). For this problem, the equivalent piston speed (ft/min) is calculated to be 71.
- Finally, calculate the Steam Engine Power using the formula above:

Pse = 7*A*S /33,000

Inserting the values from above and solving the equation with the imputed values gives:

Pse = 7*16*71 /33,000 = .240 (HP)

**Example Problem #2: **

Using the same process as example problem 1, we first define the variables outlined by the formula. In this case, the values are:

area of piston (in^2) = 3

equivalent piston speed (ft/min) = 1000

Entering these values into the formula or calculator above gives us::

Pse = 7*3*1000 /33,000 = .636 (HP)