# Milligrams

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 milligrams (mg) to grains (gr) conversions is as follows:

• 1 milligram = 0.15432358 grains

The conversion formula for grains (gr) to milligrams (mg) conversions is as follows:

• 1 grain = 64.79891 milligrams
Milligrams

The milligram is a unit equal to one thousandth of a gram and is often used in pharmaceuticals and food labelling for active ingredients vitamins and trace elements.

SI Metric

### Definition

The milligram is defined as being 1/1,000,000 of a kilogram.

kilogram

Formal: mg

### Information

The milligram is one of the smallest units of weight in everyday use, often being used for measurement of active ingredients in tablets and vitamins, minerals and trace elemments in food products.

The milligram is used throughout the world in medical science applications, and everywhere except the USA in food labelling.

### Conversion Formulae

• 1 milligram = 1,000 micrograms
• 1 milligram = 0.1 centigrams
• 1 milligram = 0.01 decigrams
• 1 milligram = 0.001 grams
• 1 milligram = 0.0001 decagrams
• 1 milligram = 0.00001 hectograms
• 1 milligram = 0.000001 kilograms
• 1 milligram = 0.000000001 megagrams

• 1 microgram = 0.001 milligrams
• 1 centigram = 10 milligrams
• 1 decigram = 100 milligrams
• 1 gram = 1,000 milligrams
• 1 decagram = 10,000 milligrams
• 1 hectogram = 100,000 milligrams
• 1 kilogram = 1,000,000 milligrams
• 1 megagram = 1,000,000,000 milligrams
Grains

The grain was the base unit of the English weight system and is the only common unit across the Avoirdupois, Troy and Apothercaries systems. It is part of both the British Imperial and US Customary systems, being equal to 1/7000th of a pound. Since 1959 it has been formerly defined in terms of the SI system of units as 64.79891 milligrams

### Unit System

Avoirdupois - British Imperial & US Customary

### Definition

The grain is defined has 64.79891 milligrams as from the International Yard and Pound agreement of 1959.

### Base Unit

Pound

There are 7000 grains to the avoirdupois pound and 5760 grains to the troy pound or apothecaries pound.

Formal: gr

### Information

The grain is one of the earliest measures of weight with recorded uses in ancient Greece. It is based upon the weight of wheat and/or barley grains dependent on location, although these grain seeds can vary significantly in weight.

The grain was adopted into the avoirdupois weight system in 1588 by Elizabeth I of England and thus became part of the British Imperial and US Customary weight systems. It is the smallest unit of the avoirdupois system.

Grains were formerly used in weights for a lot of medicinal compounds and are still used for weighing gunpowder and for indicating the level of propellant in bullets.

In the US grains are used when measuring emissions and the amount of moisture in the air with grains/cubic foot being used as the unit.

Grains are used primarily in the US, with usage in most other countries having been replaced by metric units.

### To/From British Imperial Units

• 1 grain = 0.036571429 drams
• 1 grain = 0.002285714 ounces
• 1 grain = 0.000142857 pounds
• 1 grain = 0.000010204 stones
• 1 grain = 0.000005102 quarters
• 1 grain = 0.000001276 hundredweight
• 1 grain = 0.000000064 tons

• 1 dram = 27.34375 grains
• 1 ounce = 437.5 grains
• 1 pound = 7,000 grains
• 1 stone = 98,000 grains
• 1 quarter = 196,000 grains
• 1 hundredweight = 784,000 grains
• 1 ton = 15,680,000 grains

### To/From US Customary Units

• 1 grain = 0.036571429 drams
• 1 grain = 0.002285714 ounces
• 1 grain = 0.000142857 pounds
• 1 grain = 0.000005714 quarters
• 1 grain = 0.000001429 hundredweight
• 1 grain = 0.000000071 tons

• 1 dram = 27.34375 grains
• 1 ounce = 437.5 grains
• 1 pound = 7,000 grains
• 1 quarter = 175,000 grains
• 1 hundredweight = 700,000 grains
• 1 ton = 14,000,000 grains

### To/From Metric Units

• 1 grain = 64,798.91 micrograms
• 1 grain = 64.79891 milligrams
• 1 grain = 6.479891 centigrams
• 1 grain = 0.6479891 decigrams
• 1 grain = 0.06479891 grams
• 1 grain = 0.006479891 decagrams
• 1 grain = 0.0006479891 hectograms
• 1 grain = 0.00006479891 kilograms
• 1 grain = 0.00000006479891 megagrams

• 1 microgram = 0.000015432 grains
• 1 milligram = 0.015432 grains
• 1 centigram = 0.154324 grains
• 1 decigram = 1.543236 grains
• 1 gram = 15.432358 grains
• 1 decagram = 154.323584 grains
• 1 hectogram = 1,543.235835 grains
• 1 kilogram = 15,432.358352 grains
• 1 megagram = 15,432,358.352 grains
Common Conversions mg to gr
 mg gr 1 0.154 2 0.309 3 0.463 4 0.617 5 0.772 6 0.926 7 1.080 8 1.235 9 1.389 10 1.543
 mg gr 10 1.543 20 3.086 30 4.630 40 6.173 50 7.716 60 9.259 70 10.803 80 12.346 90 13.889 100 15.432
 mg gr 100 15.432 200 30.865 300 46.297 400 61.729 500 77.162 600 92.594 700 108.027 800 123.459 900 138.891 1,000 154.324
Common Conversions gr to mg
 gr mg 1 64.80 2 129.60 3 194.40 4 259.20 5 323.99 6 388.79 7 453.59 8 518.39 9 583.19 10 647.99
 gr mg 10 647.99 20 1,295.98 30 1,943.97 40 2,591.96 50 3,239.95 60 3,887.93 70 4,535.92 80 5,183.91 90 5,831.90 100 6,479.89
 gr mg 100 6,479.89 200 12,959.78 300 19,439.67 400 25,919.56 500 32,399.46 600 38,879.35 700 45,359.24 800 51,839.13 900 58,319.02 1,000 64,798.91