Convert 40 grains to grams

Explanation

Let's convert 40 grains to grams, or gr to g as one could put it.

First, we need to calculate the conversion factor using the units respective values. We find 0.0648.

Then we multiply this conversion factor by the number of grains. In this case 40.

Therefore, 40 grains is approximately equal to 2.592 grams.

Formula

1 gr≈0.0648 g

40 gr≈40 × 0.0648 g

40 gr≈2.592 g

grainsgr

dimension	mass
symbol	gr

The grain (gr) is a unit of mass in the international mass and length units.

Definition of the grain

One grain is equal to ¹⁄₇₀₀₀ of a pound.

From the Weights and Measures Act of 1985: PART VI: Measurement of Mass

Value in terms of the SI

One grain is equal to 0.06479891 grams.

History

Traditionally, the grain was the base unit of the English weight system, a common practice in farming societies. The English grain was the weight of a single seed of barleycorn and therefore larger than other grains on the continent based on wheat.

Some Facts

The smallest bird is the bee hummingbird. With an average weight of 40 grains (2.5 grams), the females are slightly bigger than the males who only weigh 30 grains (2 grams) on average.

International Mass Units

grain	gr
dram	dr	27¹¹⁄₃₂ grains
ounce	oz	16 drams
pound	lb	16 ounces
stone*	st	14 pounds
quarter*	qr	2 stones
short hundredweight^†	cwt	100 pounds
long hundredweight*	cwt	4 quarters
short ton^†	st	20 short hundredweight
long ton*	lt	20 long hundredweight

* specific to the United Kingdom

^† specific to the United States of America

The International Mass and Length Units

The International Mass and Length Units are units based on the international yard and the international pound.

They were created in 1959 when Australia, Canada, New Zealand, South Africa, the United Kingdom and the United States of America agreed upon a common definition of the yard and the pound.

gramsg

dimension	mass
system	International system of units (SI)
symbol	g
search alias	gm

The gram (g) is a unit of mass in the International System of Units.

Definition of the gram

One gram is equal to 0.001 kilograms.

History

The gram was introduced in 1795 by the French National Convention as "the absolute weight of a volume of pure water equal to that of a cube of one hundredth of a meter side, at melting ice temperature".

It was replaced by the kilogram as the base unit of mass in 1960 for the creation of the SI.

Equivalences

One gram is equivalent to:

SI Mass Units

nanogram	ng	0.000000001
microgram	µg	0.000001
milligram	mg	0.001
gram	g	1
kilogram	kg	1000
megagram	Mg	1000000

The International System of Units

The International System of Units or SI (from the French Système international (d'unité)), also called metric system in the U.S., is a coherent system of units that was published 1960. It is official in nearly every country.

The General Conference on Weights and Measures (Conférence générale des poids et mesures) is tasked with overseeing the SI.