Convert weight and mass units — kilograms, pounds, grams, ounces, tons, carats and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 g | 0.0154321 gr | |
| 0.01 g | 0.154321 gr | |
| 0.1 g | 1.54321 gr | |
| 1 g | 15.4321 gr | |
| 5 g | 77.1605 gr | |
| 10 g | 154.321 gr | |
| 50 g | 771.605 gr | |
| 100 g | 1543.21 gr | |
| 1000 g | 15432.1 gr |
The Milligram (mg) and the Gram (g) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 g = 15.4321 gr
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Gram (g) | Grain (gr) | Real-world context |
|---|---|---|
| 0.1 g | 1.5432099 gr | |
| 1 g | 15.4320988 gr | large paperclip |
| 5 g | 77.1604938 gr | |
| 10 g | 154.321 gr | |
| 100 g | 1543.2099 gr | small apple |
1 gram (g) equals exactly 15.4320988 grains (gr). Use the formula: g × 15.4320988 = gr.
To convert grams to grains, multiply your value in grams by 15.4320988. For example, 5 g × 15.4320988 = 77.1604938 gr.
100 grams = 1543.2099 grains. Calculation: 100 × 15.4320988 = 1543.2099.
To convert grains back to grams, divide by 15.4320988 (or multiply by 0.0648). Example: 10 gr ÷ 15.4320988 = 0.648 g.
Yes. This converter uses the internationally recognised exact conversion factor: 1 g = 15.4320988 gr. All calculations are performed in your browser with no rounding until display.
10 grams = 154.321 grains. Simply multiply by 15.4320988.
Converting grams to grains is commonly needed for jewellery valuation, gemstone trading, precious metal buying and selling, and hallmarking compliance where one system uses g and another uses gr.
The gram (g) is a unit of mass in the metric system equal to one-thousandth of a kilogram (0.001 kg). While the kilogram is the SI base unit, the gram is the practical everyday unit for small masses in cooking, pharmacy, chemistry, and nutrition labelling. The word derives from Late Latin gramma (small weight), itself from Greek.
The grain (gr) is the smallest unit in the avoirdupois, troy, and apothecary weight systems, equal to exactly 64.79891 milligrams (0.06479891 g). All three systems share the same grain as base: one avoirdupois pound = 7,000 grains; one troy pound = 5,760 grains. The grain is still used in ballistics (bullet and powder weights) and some pharmaceutical contexts.
Defined in 1795 by the French Academy of Sciences as the mass of one cubic centimetre of pure water at 4 °C — this made 1 mL of water weigh almost exactly 1 gram. The gram was the practical base of early metric calculations before the kilogram took over as SI base unit in 1875. The relationship 1 mL water ≈ 1 g is still a useful approximation in cooking and chemistry.
Interesting fact: A standard large paperclip weighs about 1 gram. The gram forms the basis for milligram (mg), microgram (μg), and tonne (10⁶ g) through SI prefixes.
The grain is among the oldest measurement units in history, derived from the average weight of a grain of barleycorn (or wheat) — a practical standard used in ancient Egypt, Greece, and Rome. England formalised the barleycorn grain in the 15th century as the foundation of its weight system. The British Weights and Measures Act 1824 defined the grain, and the value remains unchanged today.
Interesting fact: The original grain was calibrated by laying dried barleycorns end-to-end — 32 grains equalled one inch in 13th-century England. Today, 9mm pistol bullets typically weigh 115–147 grains (7.5–9.5 g), and gunpowder charges are specified in grains for reloading.