How to Convert Inches per Second to Miles per Hour

Conversion Rate

• 1

  Multiply 5,280 times 12. This calculation shows how many inches are in a mile. The product of these two numbers is 63,360 inches per mile.

• 2

  Multiply 60 times 60. There are 60 seconds in a minute and 60 minutes in an hour. This calculation results in an answer of 3,600 seconds per hour.

• 3

  Divide 63,360 inches by 3,600 seconds. This answer calculates 17.6 inches per second.

• 4

  Divide 1 second by 17.6 inches per second. This step determines the conversion rate. When you divide this, the answer is 0.0568 (rounded). Therefore, the conversion rate is 0.0568.

• 5

  Multiply the conversion rate by the inches per second. For example, to convert 100 inches per second to miles per hour, multiply 100 times the conversion rate of 0.0568. The answer is 5.68 miles per hour.

Fraction Method

• 6

  Multiply 50 inches/1 second times 60 seconds/1 minute, 60 minutes/1 hour, 1 mile/5,280 feet, 1 foot/12 inches and 50 inches/1 second.

• 7

  Multiply all the numerators together and then divide by each denominator. The answer is 2.84.

• 8

  Cross off any terms that are alike as numerators and denominators. When this is complete, the only remaining terms are miles/hour. The final answer is then 2.84 miles per hour.