Cheat Sheets: 25 Measurement Conversions Every Gearhead Should Know
Every car guy has his own way of doing things.
That goes for the engineers and marketing guys at big automotive and aftermarket parts manufacturers, too. For example, some fuel pump makers rate their pumps by gallons-per-hour. Others go by pounds-per-hour. Some engines are measured in cubic inches; others are advertised in cubic centimeters.
That’s why we think it’s important to keep a list of measurement conversions handy.
As a public service, we’ve put together this quick guide to common conversions. It includes the basic standard vs. metric stuff, weight conversions for the track, and other assorted automotive-centric conversions you can use. Print it out, along with the 13 Key Formulas You Should Know, and stick it in your toolbox for safe keeping.
Quick Conversions
Ounces vs. Grams: 1 ounce = 28.35 grams
Pounds vs. Grams: 1 pound = 453.6 grams
Pounds vs. Ounces: 1 pound = 16 ounces
Inch vs. Centimeter: 1 inch = 2.540 cm
Inch vs. Millimeter: 1 inch = 25.40 mm
Gallons of Nitro to Pounds: 1 gallon of nitro = 9.5 pounds/1 quart = 2.37 pounds
Gallons of Alcohol to Pounds: 1 gallon of alcohol = 6.6 pounds/1 quart = 1.65 pounds
Gallons of Gasoline to Pounds: 1 gallon of gasoline = 6.2 pounds/1 quart = 1.55 pounds
Gallons of Water to Pounds: 1 gallon of water = 8.3 pounds/1 quart = 2.08 pounds
Gallons of Oil to Pounds: 1 gallon of oil = 7 pounds/1 quart = 1.75 pounds
Metric and Standard Conversions
Kilometers to Feet: 1 kilometer = 1,000 meters = 3,280.83 feet
Kilometers to Miles: 1 kilometer = 1,000 meters = .6215 mile
Meters to Inches: 1 meter = 100 centimeters = 39.37 inches
Meters to Yards: 1 meter = 100 centimeters = 1.09 yards
Decimeter to Inches: 1 decimeter = 3.937 inches
Centimeter to Inches: 1 centimeter = .3937 inches
Kilograms to Pounds: kilograms/2.20 = pounds
Pounds vs. Grams: 1 pound = 453.6 grams
Ounces vs. Grams: 1 ounce = 28.35 grams
Grams vs. Millgrams: 1 gram = 1,000 milligrams
Engine and Performance
Cubic Inches (CID) = CC ÷ 16.39
Cubic Centimeters (CC) = CID x 16.39
Lbs/hr. (LPH) = divide cc/min by 10.5
Gallons/hr. (GPH) = divide lbs/hr. by 6.0
Automotive Plumbing
-AN Size to Fractional Equivalent
-3 AN = 3/16″
-4 AN = 1/4″
-6 AN = 3/8″
-8 AN = 1/2″
-10 AN = 5/8″
-12 AN = 3/4″
-16 AN = 1″
-20 AN = 1-1/4″
-24 AN = 1-1/2″
kilograms x 2.20 = pounds
You’re Wrong Bill. A kilogram is 2.2 times as heavy as a pound. The chart is correct. Pounds x 2.2 = kilos.
No… One kilo equals 2.2lbs. So 10 kilos is 22 lbs. Soo… 10×2.2= 22. You’re wrong Tom
Stinkin’ metric. I have a better idea. Let’s just JUNK the stupid metric system; we all seemed to do just fine when everything was Imperial and SAE. Let the Europeans have the metric system; they’re just too stupid to understand fractions.
Jusr do it like they all use to do it make it more exciting. A x B= DANG IT!! MY EYE BROWS!!!