Imperial to metric


As with metric to imperial, you can easily convert imperial to metric given the right conversion factor.


Imperial to metric examples


Mass

Conversion

factor

Example

Imperial tons

to metric tons

x 1.016

(approx)

1 imperial ton

= 1 x 1.016

= 1.016 metric ton

Stones to kilograms

(st to kg)

x 6.350

(approx)

1st = 1 x 6.350 = 6.350kg

Pounds to kilograms

(lb to kg)

x 0.454

(approx)

1lb = 1 x 0.454 = 0.454kg

Ounces to grams

(oz to g)

x 28.350

(approx)

1oz = 1 x 28.350 = 28.350g

(kilo denotes one thousand)



Distance (length/height/width)

Conversion

factor

Example

Miles to kilometers

(miles to km)

x 1.609

(approx)

1mile = 1 x 1.609 = 1.609km

Yards to meters

(yd to m)

x 0.914

(approx)

1yd = 1 x 0.914 = 0.914m

Feet to meters

(ft to m)

x 0.305

(approx)

1ft = 1 x 0.305 = 0.305m

Inches to centimeters

(in to cm)

x 2.54

1in = 1 x 2.54 = 2.54cm

(centi denotes one hundredth)



Area

Conversion

factor

Example

Acres to hectares

(ac to ha)

x 0.405

(approx)

1ac = 1 x 0.405 = 0.405ha

Square yards

to square meters

(yd² to m²)

x 0.836

(approx)

1yd² = 1 x 0.836 = 0.836m²

Square feet

to square meters

(ft² to m²)

x 0.093

(approx)

1ft² = 1 x 0.093 = 0.093m²

Square inches

to square centimeters

(in² to cm²)

x 6.452

(approx)

1in² = 1 x 6.452 = 6.452cm²



Volume / capacity

Conversion

factor

Example

Cubic yards

to cubic meters

(yd³ to m³)

x 0.765

(approx)

1yd³ = 1 x 0.765 = 0.765m³

Cubic feet

to cubic meters

(ft³ to m³)

x 0.028

(approx)

1ft³ = 1 x 0.028 = 0.028m³

Cubic inches

to cubic centimeters

(in³ to cm³)

x 16.387

(approx)

1in³ = 1 x 16.387 = 16.387cm³

Imperial gallons to liters

(imp gal to l)

x 4.546

(approx)

1 imp gal = 1 x 4.546 = 4.546l

Imperial pints to liters

(imp pt to l)

x 0.568

(approx)

1 imp pt = 1 x 0.568 = 0.568l

Note the conversion factors for US gallons and US pints to liters are approximately 3.785 and 0.473 respectively, i.e. 1 US gal = 3.785 liters, 1 US pint = 0.473 liter.



Speed

Conversion

factor

Example

Miles per hour

to kilometers per hour

(mph to km/hr)

x 1.609

(approx)

1mph = 1 x 1.609 = 1.609km/hr

Yards per second

to meters per second

(yd/s to m/s)

x 0.914

(approx)

1yd/s = 1 x 0.914 = 0.914m/s

Feet per second

to meters per second

(ft/s to m/s)

x 0.305

(approx)

1ft/s = 1 x 0.305 = 0.305m/s


How are you feeling about metric vs imperial?


By working carefully through the lessons, you should now be confident about metric and imperial units.


Practice using the conversion factors to switch between the different units.


For more on metric vs imperial click:

What is the metric system?

Imperial units

Metric to imperial conversion


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