Convert gold weight between grams and grains in either direction. Choose
the conversion you need, enter the weight, and calculate the equivalent
value using the standard relationship of 1 grain = 0.06479891 grams.
Gold Grams to Grains Conversion
A grain is a small unit of mass used in several measurement systems and
is also encountered in precious-metal weight conversions. The standard
international grain is defined as 0.06479891 grams.
To convert grams into grains, divide the gram weight by 0.06479891.
Grains = Grams ÷ 0.06479891
Equivalently, one gram is approximately 15.43235835 grains.
1 gram ≈ 15.43235835 grains
For example, 10 grams of gold converts to approximately 154.32358 grains.
10 ÷ 0.06479891 ≈ 154.32358 grains
Grains to Grams Gold Conversion
To convert grains into grams, multiply the number of grains by
0.06479891.
Grams = Grains × 0.06479891
For example, 100 grains of gold equals:
100 × 0.06479891 = 6.479891 grams
Common Grams to Grains Conversions
| Gold Weight |
Grains |
| 0.1 gram |
≈ 1.543236 grains |
| 0.5 gram |
≈ 7.716179 grains |
| 1 gram |
≈ 15.432358 grains |
| 5 grams |
≈ 77.161792 grains |
| 10 grams |
≈ 154.323583 grains |
| 20 grams |
≈ 308.647167 grains |
| 31.1034768 grams |
480 grains |
| 50 grams |
≈ 771.617917 grains |
| 100 grams |
≈ 1,543.235834 grains |
What Is a Grain?
The grain is a traditional unit of mass. Its standardized international
value is exactly 64.79891 milligrams, which is equal to 0.06479891 grams.
1 grain = 64.79891 mg = 0.06479891 g
In precious-metal calculations, grains are especially useful when very
small masses need to be expressed with more granularity than whole grams.
1 grain = 0.06479891 g
1 troy ounce = 480 grains
Grains and Troy Ounces
The grain has a direct relationship with the troy-ounce system used for
precious metals. One troy ounce contains exactly 480 grains.
480 grains × 0.06479891 g = 31.1034768 g
Therefore, the grain conversion is consistent with the standard troy-ounce
mass used for gold and other precious metals.
| Unit |
Equivalent |
| 1 grain |
0.06479891 g |
| 100 grains |
6.479891 g |
| 240 grains |
15.5517384 g |
| 480 grains |
31.1034768 g |
| 480 grains |
1 troy ounce |
Does Gold Purity Affect Grain Conversion?
No. A grain is a unit of mass, so the conversion between grains and grams
remains the same regardless of whether the material is pure gold or a gold
alloy.
Purity affects the proportion of the total mass that consists of fine gold,
but it does not change the mass represented by a grain.
Fine Gold Weight = Gross Weight × Purity Fraction
For example, 100 grains always has a gross mass of 6.479891 grams. Any
calculation of fine-gold content is a separate step based on fineness.
Why Convert Gold Between Grams and Grains?
Converting between these units can be useful when comparing older
specifications, precious-metal measurements, small gold quantities and
records that use different mass systems.
Small weights
Grain provides a convenient unit for expressing relatively small masses
without using very small decimal gram values.
Precious-metal calculations
Because 480 grains equal one troy ounce, grain measurements can be
related directly to the conventional precious-metal weight system.
Comparing specifications
Converting both measurements into grams can simplify comparisons when
different sources use different weight units.
Gold Weight Units Compared
| Unit |
Equivalent in Grams |
| 1 grain |
0.06479891 g |
| 1 gram |
1 g |
| 1 pennyweight |
1.55517384 g |
| 1 tola |
11.6638125 g |
| 1 troy ounce |
31.1034768 g |
| 1 kilogram |
1,000 g |
These are mass relationships and should be kept separate from gold purity,
fineness and market pricing.
Grains Versus Other Gold Weight Units
Gold can be described using grams, grains, pennyweights, tola, troy ounces
and kilograms. The most appropriate unit depends on the market, product
specification or record being used.
For precious-metal pricing, it is important to identify the unit attached
to a quoted price. A price per troy ounce is not directly comparable with a
price per gram or per grain until the units have been converted.
This converter handles the mass conversion only. Any valuation should be
performed separately using the relevant gold price and purity.
Important Limitations
This calculator converts weight only. It does not determine gold purity,
authenticity, market value, dealer buyback value or jewellery-making
charges.
It does not use live gold prices. A weight conversion should therefore be
treated separately from any gold valuation or pricing calculation.
For physical gold and jewellery, use verified scale measurements and
reliable fineness or assay information for product-specific decisions.
Frequently Asked Questions
How many grams are in one grain of gold?
One grain equals exactly 0.06479891 grams.
How do I convert grams of gold to grains?
Divide the gram weight by 0.06479891. One gram is approximately 15.43235835
grains.
How do I convert grains to grams?
Multiply the grain weight by 0.06479891.
Does gold purity affect grams to grains conversion?
No. The conversion is based on mass and is independent of gold purity.
How many grains are in one troy ounce of gold?
One troy ounce equals exactly 480 grains.
How many grams are in 100 grains of gold?
100 grains equals 6.479891 grams.
Is a grain the same as a gram?
No. One grain is 0.06479891 grams, so a grain is much smaller than a gram.
Does this converter use live gold prices?
No. It converts weight only and does not require a gold price.