How to Convert Milligrams per Liter to Parts per Million

Scientists often measure pollution levels in parts per million.
••• Hemera Technologies/AbleStock.com/Getty Images

"Parts per million" sounds like a small quantity and it is. One part per million (ppm), for example, is the equivalent of one inch in a distance of 16 miles, one second in a little more than 11 days or one car in bumper-to-bumper traffic stretching all the way from Cleveland to San Francisco. Milligrams per liter (mg/L) is another unit scientists use to express small quantities. Converting from one to the other is perfectly simple.

    Write the quantity in milligrams per liter that you want to convert to parts per million using the correct units. For example, you write "7 mg/L."

    Multiply the number you have written by 1. For example, 7 x 1 = 7.

    Write your answer with the correct units as parts per million. For example, you write "7 mg/L = 7 ppm."

Related Articles

How to Convert Tenths to Hundredths
How to Convert Seconds Into Miles Per Hour
How to Convert Inches to 16ths of an Inch
How to Calculate the Percentage of Another Number
How to Make a Homemade Weather Vane for Kids
How to Convert Nautical Knots to Miles
How to Figure a Percentage of a Whole Number
How to Convert Inches to the Metric System
How to Convert Pounds Per Square Foot to PSI
How to Calculate the Diameter of a Circle From a Linear...
How to Convert Kilopascals to Joules
How to Compare KTS to MPH in Wind Speed
How to Divide Rational Numbers
How to Calculate Slope Ratio
How to Calculate CFM to MPH
How to Calculate Wheel Speed
How to Convert Inches to Mm
How to Convert FT LB to IN LB
How to Calculate Wheel Circumference
What Units Do Barometers Measure In?