Grams to Grains Converter
Enter the weight in grams below to convert it to grains.
Convert Grams to Grains
Enter a value in grams (g) to convert to grains (gr).
Gram to Grain Conversion Table
Table showing various gram measurements converted to grains. Click any preset value or arrow to load it into the converter.
| Grams (g) | Grains (gr) |
|---|---|
| 1 g | 15.4323584 gr |
| 2 g | 30.8647167 gr |
| 5 g | 77.1617918 gr |
| 10 g | 154.3235835 gr |
| 15 g | 231.4853753 gr |
| 20 g | 308.6471671 gr |
| 25 g | 385.8089588 gr |
| 30 g | 462.9707506 gr |
| 50 g | 771.6179176 gr |
| 75 g | 1,157.4268765 gr |
How to Convert Grams to Grains
To convert grams to grains, multiply the weight by the following conversion ratio: 15.4323584 grains/gram.
Since one gram is equal to 15.4323584 grains, you can use this simple formula to convert:
The weight in grains is equal to the weight in grams multiplied by 15.4323584.
For example, here's how to convert 10 grams to grains using the formula above.
How Many Grains Are in a Gram?
There are 15.4323584 grains in a gram, which is why we use this value in the formula above.
Our gram to grain calculator automatically converts your weight measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Grams and grains are both units used to measure weight. Keep reading to learn more about each unit.
What Is a Gram?
A gram is a unit of weight equal to 1/1,000 of a kilogram (0.001 kg). Metric unit equal to one-thousandth of a kilogram (0.001 kg). [1]
The gram is classified as a metric and SI-compatible unit of weight. Grams can be abbreviated as g; for example, 1 gram can be written as 1 g.
When working with grams (g) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, grams (g) are widely used across fine-tolerance laboratory, analytical, and micro-scale weight measurements within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Grain?
A grain is a unit of weight equal to 0.000064799 kilograms (kg), the base unit for weight. Traditional unit equal to 1/7000 of an avoirdupois pound (exact 64.79891 mg). [2]
The grain is classified as a US customary and imperial unit of weight. Grains can be abbreviated as gr; for example, 1 grain can be written as 1 gr.
When working with grains (gr) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, grains (gr) are widely used across fine-tolerance laboratory, analytical, and micro-scale weight measurements within US customary and imperial workflows, engineering documentation, and technical data sheets.
When converting weight between grams (g) and grains (gr), keep full floating-point precision (1 g = 15.4323584 gr; 1 gr = 0.0647989 g) during intermediate calculations and round only the final grain figure to match your instrument tolerance.
More Gram & Grain Conversions
Need to calculate in the opposite direction? Use our grains to grams converter (gr to g) to switch your starting unit immediately. You can also explore related tools such as converting grams to ounces, converting grams to kilograms, or converting kilograms to pounds.
Convert from Grams
Weight and volume require ingredient density (g/mL). Choose a USDA FoodData Central verified ingredient below:
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Mass)·Mass & Weight Metrology Standard — Grams (g) to Grains (gr)
- [2]NIST HB 44 SpecificationNIST HB 44 (NIST Handbook 44 (Current Ed.))·Unit Specifications: Gram (g) & Grain (gr)
- [3]BIPM ReferenceBIPM (SI Base Unit: Kilogram (kg))·Conversion Factors & Mathematical Basis (g to gr)