Calculate horsepower per dollar, total horsepower, or total cost from any two values to compare engine value and budget planning.

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Compare the same power-rating standard and cost basis. Dollars are USD; this ratio excludes reliability, weight, running costs and other vehicle qualities.

Horsepower Per Dollar Formula

The main formula is:

HPD = HP / C
  • HPD = horsepower per dollar, in HP/$
  • HP = total horsepower, in hp
  • C = total cost, in dollars

The calculator can rearrange the same relationship depending on the solve mode you select.

HP = C × HPD
C = HP / HPD
  • To find horsepower per dollar, divide total horsepower by total cost.
  • To find total horsepower, multiply total cost by horsepower per dollar.
  • To find total cost, divide total horsepower by horsepower per dollar.

Horsepower Per Dollar Comparisons

Horsepower per dollar is a simple value metric. A higher number means more rated horsepower for each dollar on the same power-rating and cost basis. These arithmetic examples are not market benchmarks or overall quality ratings.

HP/$ Result Equivalent Cost per Horsepower Horsepower per $1,000
0.005 HP/$ $200 per hp 5 hp per $1,000
0.010 HP/$ $100 per hp 10 hp per $1,000
0.020 HP/$ $50 per hp 20 hp per $1,000
0.050 HP/$ $20 per hp 50 hp per $1,000

Example Calculations

Example 1: Find horsepower per dollar

You have a vehicle with 400 hp that costs $40,000.

HPD = HP / C
HPD = 400 / 40000 = 0.0100 HP /

The result is 0.0100 HP/$. This is the same as $100 per horsepower.

Example 2: Find total cost

You want 500 hp at a value of 0.0125 HP/$.

C = HP / HPD
C = 500 / 0.0125 = 40000

The total cost is $40,000.

FAQ

What does horsepower per dollar mean?

Horsepower per dollar tells you how much horsepower you get for each dollar spent. For example, 0.010 HP/$ means you get 0.010 horsepower for every $1. It can also be read as $100 per horsepower.

Is a higher horsepower per dollar better?

Yes, if you are only comparing power value. A higher HP/$ means more horsepower for the same money. It does not include reliability, weight, fuel use, maintenance, traction, or build quality.

Can total cost be zero?

No. The formula divides by total cost when calculating horsepower per dollar. Dividing by zero is not valid. Enter a positive cost to get a usable result.