# Grams

Enter the value to convert into the box and modify the accuracy of the conversion by selecting number of significant figures or decimal places by clicking on the boxes provided.

Conversion Formulae

The conversion formula for grams (g) to ounces (oz) conversions is as follows:

• 1 gram = 0.03527396 ounces

The conversion formula for ounces (oz) to grams (g) conversions is as follows:

• 1 ounce = 28.34952313 grams
Grams

The gram was the original base weight unit of the metric system being defined in 1795 as "the absolute weight of a volume of water equal to the cube of the hundredth part of the metre, at the temperature of melting ice" or the weight of a cubic centimetre of water at 0 degrees celsius in simpler parlance.

SI Metric

### Definition

The gram is now defined as being a one thousandth part of a kilogram.

### Base Unit

kilogram

The gram was originally the base weight unit of the metric system but this changed as for most commercial use the gram was too small a unit.

### Abbreviation

Formal: g

Using alternate abbreviations for the gram such a gm could lead to confusion and as such is not recommended.

### Information

The gram was the original base unit of weight in the French metric system and was originally defined in 1795 as "the absolute weight of a volume of water equal to the cube of the hundredth part of the metre, at the temperature of melting ice".

The gram was considered too small to be the base unit and use of the kilogram was much more common in commercial and scientific applications and thus in 1799 a prototype kilogram was created out of platinum that then became the base unit.

In daily use, in many countries, the gram can be seen as a measurement on food labels and some higher value loose produce is sold at a price per 100 grams.

Grams are recognised world wide although they are not often used outside of scientific applications in the United States.

### Conversion Formulae

• 1 gram = 1,000,000 micrograms
• 1 gram = 1,000 milligrams
• 1 gram = 100 centigrams
• 1 gram = 10 decigrams
• 1 gram = 0.1 decagrams
• 1 gram = 0.01 hectograms
• 1 gram = 0.001 kilograms
• 1 gram = 0.000001 megagrams

• 1 microgram = 0.000001 grams
• 1 milligram = 0.001 grams
• 1 centigram = 0.01 grams
• 1 decigram = 0.1 grams
• 1 decagram = 10 grams
• 1 hectogram = 100 grams
• 1 kilogram = 1,000 grams
• 1 megagram = 1,000,000 grams
Ounces

The ounce is one sixteenth of a pound in the avoirdupois weight system and is common to both the US Customary and British Imperial systems.

Originally derived from a roman weight unit, the ounce is commonly found in recipes in the US, UK and many British Commonwealth countries.

### Unit System

Avoirdupois - British Imperial & US Customary

### Definition

The ounce is defined as 1/16th of a pound.

Pound

Formal: oz

### Information

The ounce is used in both the US Customary and British Imperial weight systems and has been in use since before the time of Elizabeth I (1533-1603). In 1588 Elizabeth I approved a statute that fixed the avoirdupois pound at 7,000 grains which is the current size - this change was the last major change in definition affecting the ounce.

The ounce was one of the main units used in recipes and is still in common use in the UK by cooks, despite the metric system being adopted in 1970 and the ounce ceasing to be a legal unit of measure (for economic, health, safety or administration) in the year 2000. Interestingly the health/safety aspect of this legislation should prevent the ounce being used in commercial kitchens as a measure for ingredients.

The ounce is in statutory use in the United States and is informally used in the United Kingdom and British Commonwealth countries, such as Australia, Cannada, Jamaica, New Zealand and South Africa.

### To/From British Imperial Units

• 1 ounce = 437.5 grains
• 1 ounce = 16 drams
• 1 ounce = 0.0625 pounds
• 1 ounce = 0.00446429 stones
• 1 ounce = 0.00223214 quarters
• 1 ounce = 0.00055804 hundredweight
• 1 ounce = 0.00002790 tons

• 1 grain = 0.00228571 ounces
• 1 dram = 0.0625 ounces
• 1 pound = 16 ounces
• 1 stone = 224 ounces
• 1 quarter = 448 ounces
• 1 hundredweight = 1,792 ounces
• 1 ton = 35,840 ounces

### To/From US Customary Units

• 1 ounce = 437.5 grains
• 1 ounce = 16 drams
• 1 ounce = 0.0625 pounds
• 1 ounce = 0.0025 quarters
• 1 ounce = 0.000625 hundredweight
• 1 ounce = 0.00003125 tons

• 1 grain = 0.00228571 ounces
• 1 dram = 0.0625 ounces
• 1 pound = 16 ounces
• 1 quarter = 400 ounces
• 1 hundredweight = 1,600 ounces
• 1 ton = 32,000 ounces

### To/From Metric Units

• 1 ounce = 28,349,523.1 micrograms
• 1 ounce = 28,349.5231 milligrams
• 1 ounce = 2,834.95231 centigrams
• 1 ounce = 283.495231 decigrams
• 1 ounce = 28.3495231 grams
• 1 ounce = 2.83495231 decagrams
• 1 ounce = 0.283495231 hectograms
• 1 ounce = 0.0283495231 kilograms
• 1 ounce = 0.0000283495231 megagrams

• 1 microgram = 0.00000003527396 ounces
• 1 milligram = 0.00003527396 ounces
• 1 centigram = 0.0003527396 ounces
• 1 decigram = 0.003527396 ounces
• 1 gram = 0.03527396 ounces
• 1 decagram = 0.3527396 ounces
• 1 hectogram = 3.527396 ounces
• 1 kilogram = 35.27396 ounces
• 1 megagram = 35,273.96 ounces
Common Conversions g to oz
 g oz 1 0.04 2 0.07 3 0.11 4 0.14 5 0.18 6 0.21 7 0.25 8 0.28 9 0.32 10 0.35
 g oz 10 0.35 20 0.71 30 1.06 40 1.41 50 1.76 60 2.12 70 2.47 80 2.82 90 3.17 100 3.53
 g oz 100 3.53 200 7.05 300 10.58 400 14.11 500 17.64 600 21.16 700 24.69 800 28.22 900 31.75 1,000 35.27
Common Conversions oz to g
 oz g 1 28.35 2 56.70 3 85.05 4 113.40 5 141.75 6 170.10 7 198.45 8 226.80 9 255.15 10 283.50 11 311.84 12 340.19 13 368.54 14 396.89 15 425.24 16 453.59
 oz g 20 566.99 24 680.39 28 793.79 32 907.18 36 1,020.58 40 1,133.98 44 1,247.38 48 1,360.78