 Online Calculators

# Weight (Mass) Conversion Calculator

Convert Weight (Mass)

a real number or scientific notation

## Calculator Use

This online conversion calculator will convert among different units of weight or mass. For more specific calculations use avoirdupois unit conversions and troy unit conversions.

## How to Convert Units of Weight

Conversions are performed by using a conversion factor. By knowing the conversion factor, converting between units can become a simple multiplication problem:

S * C = E

Where S is our starting value, C is our conversion factor, and E is our end converted result.

To simply convert from any unit into grams, for example, from 5 kilograms, just multiply by the conversion value in the right column in the table below.

5 kg * 1000 [ (g) / (kg) ] = 5000 g

To convert from g into units in the left column divide by the value in the right column or, multiply by the reciprocal, 1/x.

5000 g / 1000  [ (g) / (kg) ] = 5 kg

To convert among any units in the left column, say from A to B, you can multiply by the factor for A to convert A into grams then divide by the factor for B to convert out of grams. Or, you can find the single factor you need by dividing the A factor by the B factor.

For example, to convert from kilograms to pounds you would multiply by 1000 then divide by 453.59237.  Or, multiply by 1000/453.59237 = 2.204622. So, to convert directly from kg to lb, you multiply by 2.204622.

Units, symbols and conversion values
used in this weight (mass) calculator
To Convert from
Unit
Unit
Symbol
and Convert to
( g )
Multiply by
( g / Unit )
carat (metric)
ct
gram
0.2
point (metric)
pt
gram
0.002
dram (avdp)
dr
gram
1.771845195
dram (troy)
dr
gram
3.8879346
grain (metric)
gr
gram
0.05
grain (troy)
gr
gram
0.06479891
gram
g
gram
1
hundredweight (long)
hwt
gram
50802.34544
hundredweight (short)
hwt
gram
45359.237
kilogram
kg
gram
1000
megagram
Mg
gram
1000000
milligram
mg
gram
0.001
microgram
μg
gram
0.001
ounce (avdp)
oz
gram
28.34952313
ounce (troy)
oz
gram
31.1034768
pennyweight
dwt
gram
1.55517384
pound (avdp)
lb
gram
453.59237
pound (metric)
lb
gram
500
pound (troy)
lb
gram
373.2417216
slug
slug
gram
14593.903
stone
st
gram
6350.29318
ton-assay (long)
l AT
gram
32.666667
ton-assay (short)
sh AT
gram
29.166667
ton (long)
l tn
gram
1016046.909
ton (short)
sh tn
gram
907184.74
ton-metric
t
gram
1000000
tonne (U.S. metric ton)
t
gram
1000000