# How do you convert CFM to mph?

Multiply this answer by 60, the number of minutes in an hour: 500 x 60 = 30,000 feet per hour. Divide the answer by 5,280, which is the number of feet in a mile: 30,000 / 5,280 = 5.68. This is the air’s speed in miles per hour.Click to see full answer. Simply so, is cfm or mph more important in a leaf blower?CFM vs MPH. Generally speaking, if you want to move more leaves, look for a higher CFM, not a higher MPH. A higher CFM rating typically comes from a larger, heavier motor, with more horsepower. You end up with a heavier leaf blower strapped to your back, but you can move your leaves in about half the time.Additionally, how is CFM air flow calculated? To calculate Air Flow in Cubic Feet per Minute (CFM), determine the Flow Velocity in feet per minute, then multiply this figure by the Duct Cross Sectional Area. Likewise, people ask, how many CFM do I need for a leaf blower? A good cfm for a handheld leaf blower is from 350 to 600 cfm, combined with air speeds of over 190 mph. The corded models range from 225 cfm at 60 mph (which I do not recommend) to 470 cfm at 270 mph.How many mph Should a leaf blower be?Backpack blowers are a step up from handheld in terms of power. Most, if not all are powered by gasoline. They typically run from 400 to just over 700 cfm while pushing air speeds of 200 mph. If you have an acre of land or more you will probably want to invest in one of these.