Metric Comparisons

These are generalities to give you a feel as to how much of a familiar amount is in a metric measure.

These rounded approximations allow you to compare unfamiliar amounts with familiar ones.

1” = 25mm

4” = 100mm

6” = 150mm

1’ = 300mm

3’ = 900mm

 4’ = 1200mm

5’  = 1500mm

8’ = 2500mm

10’ = 3000mm

12’ = 3600mm

20’ = 6000mm

1 pound = ½ kg

5 pounds = 2 kg

10 pounds = 4 ½ kg

20 pounds = 9 kg

100 pounds = 45 kg

1 ton = 900 kg  (but a metric ton is 1000 kg)

2/3 mile = 1 kilometer

1 mile = 1 2/3 kilometers

6 ¼ miles = 10 kilometers

10 miles = 16 kilometers

55 miles per hour = 90 kilometers per hour

62 miles per hour = 100 kilometers per hour

100 miles per hour = 160 kilometers per hour

1 quart = 1 liter

1 gallon = 4 liters

4 gallons = 15 liters

10 gallons = 38 liters

back to top