load is the measure of just how heavy an item is. Weight is measured in typical customary units.

The massive of an object is the quantity of material it contains. Massive is measure in standard metric units.

For daily purposes, as soon as you"re on the surface of the earth, the difference is no important. Yet if you measure up something on another planet, that is mass will certainly be the same as that is ~ above earth—but the weight will certainly be different. (Weight depends on gravity, and also gravity is different on various other planets! This is why when you"re floating in space, you"re weightless. friend still have actually mass, though,)

Metric devices

The gram and kilogram space two units used to measure up mass in the metric mechanism .

from the gram, we obtain the remainder of the metric systems using the standard metric prefixes.


0.001 gram or 1 1000 gram


0.01 gram or 1 100 gram

Decigram (dg)

0.1 gram or 1 10 gram


1,000 milligrams

Dekagram (dag)

10 grams

Hectogram (hg)

100 grams

Kilogram (kg)

1,000 grams

Metric ton(t)

1,000 kilograms

A record clip has actually a massive of around 1 gram.


A 1 liter bottle of water has a massive of 1 kilogram (plus a little bit extra for the plastic).


U.S. Customary units

The device for measuring weight (not mass) in the customary device is based on ounce, pound, and ton. The straightforward unit of load is a pound(lb).

1     pound   ( lb )   =   16     ounces   ( oz ) 1     ton   ( T )                 =   2 , 000     pounds

An oz is the the smallest unit of weight. A strawberry has actually a weight of about 1 ounce.


A car has a weight of about 2 tons.


To convert native one unit to another, we deserve to use unit analysis . Because that example, a truck weights 6,000 pounds. How countless tons is this?

We know that 1     ton = 2 , 000     pounds .

To transform pounds come tons, you have the right to divide 6 , 000 through 2 , 000 .

6 , 000 ÷ 2 , 000 = 3     tons .


(a) To convert from bigger units to smaller units, multiply by the proper unit ratio.

(b) To convert from smaller sized units to larger units, main point by the reciprocal the the appropriate unit ratio.

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(c) multiplying or separating by a unit proportion is mathematically identical to using a proportion to convert between units of measure up .