We've looked at how to convert length, weight, and capacity between the metric and imperial systems. Look over these summary tables, then check out the worked examples so you're ready to convert!
Length
Here is a summary of approximate conversions between metric and imperial units of length.
| Metric | Imperial |
|---|---|
| 1 millimetre | 0.04 inches |
| 1 centimetre | 0.4 inches |
| 1 metre | 1.1 yards |
| 1 kilometre | 0.6 miles |
Mass
Here is a summary of approximate conversions between imperial and metric units of mass.
| Metric | Imperial |
|---|---|
| 1 ounce | 28.4 grams |
| 1 pound | 454 grams |
| 1 stone | 6.4 kilograms |
| 1 ton | 907.2 kilograms |
Capacity
Here is a summary of approximate conversions between imperial and metric units of capacity.
| Metric | Imperial |
|---|---|
| 1 pint | 0.5 litres |
| 1 quart | 0.9 litres |
| 1 gallon | 3.8 litres |
Worked Examples
Question 1
The world’s heaviest pumpkin was grown in America and weighs just over $2000$2000 lbs.
Using the conversion $2.2$2.2 lbs$=$=$1$1 kg, state the weight of the pumpkin in kilograms.
Round your answer to one decimal place.
Question 2
Using the given table of conversions, find the metric equivalents for the following measurements:
| Conversion Table | ||
| $1$1 in | $=$= | $2.5$2.5 cm |
| $1$1 gallon | $=$= | $4.5$4.5 L |
| $1$1 kg | $=$= | $2.2$2.2 lbs |
| $1$1 mile | $=$= | $1.6$1.6 km |
$55$55 inches of ribbon
$4000$4000 gallons of crude oil
$5$5 lbs of flour (give your answer correct to 2 decimal places)
$20$20 mile long tunnel