Convert weight and mass units — kilograms, pounds, grams, ounces, tons, carats and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 gr | 1.02043e-08 st | |
| 0.01 gr | 1.02043e-07 st | |
| 0.1 gr | 1.02043e-06 st | |
| 1 gr | 1.02043e-05 st | |
| 5 gr | 5.10213e-05 st | |
| 10 gr | 0.000102043 st | |
| 50 gr | 0.000510213 st | |
| 100 gr | 0.00102043 st | |
| 1000 gr | 0.0102043 st |
The Milligram (mg) and the Gram (g) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 gr = 0.00001020426 st
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Grain (gr) | Stone (st) | Real-world context |
|---|---|---|
| 1 gr | 1.0204e-05 st | grain of wheat |
| 1000 gr | 0.01020426 st | |
| 1,000,000 gr | 10.2042584 st | |
| 1.0000e+09 gr | 10204.2584 st | |
| 1.0000e+12 gr | 10,204,258 st |
1 grain (gr) equals exactly 1.0204e-05 stone (st). Use the formula: gr × 1.0204e-05 = st.
To convert grains to stone, multiply your value in grains by 1.0204e-05. For example, 5 gr × 1.0204e-05 = 5.1021e-05 st.
100 grains = 0.00102043 stone. Calculation: 100 × 1.0204e-05 = 0.00102043.
To convert stone back to grains, divide by 1.0204e-05 (or multiply by 97998.3025). Example: 10 st ÷ 1.0204e-05 = 979983.0247 gr.
Yes. This converter uses the internationally recognised exact conversion factor: 1 gr = 1.0204e-05 st. All calculations are performed in your browser with no rounding until display.
10 grains = 0.00010204 stone. Simply multiply by 1.0204e-05.
Converting grains to stone is commonly needed for jewellery valuation, gemstone trading, precious metal buying and selling, and hallmarking compliance where one system uses gr and another uses st.
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.
The stone (st) is a British imperial unit of mass equal to exactly 14 avoirdupois pounds or 6.35029318 kilograms. Used almost exclusively in the United Kingdom and Ireland for human body weight, it has no role in scientific, commercial, or international contexts. The stone is not an SI unit and was removed from official UK trade measurement in 1985, though it remains deeply embedded in everyday British culture.
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.
One of the oldest English weight units, the stone was referenced as early as the 13th century. Historically its value varied by commodity (8 lb for meat, 12 lb for hemp, 14 lb for wool, 16 lb for glass). King Edward III standardised the wool stone at 14 pounds in 1350, which became the universal English standard. The Weights and Measures Act 1835 formally defined the stone as 14 lb. EU harmonisation abolished the stone for trade in 1985.
Interesting fact: The world record heaviest person weighed 635 kg — exactly 100 stone, illustrating how the stone unit provides digestible reference points for large body weights. British people typically express their weight as, for example, "11 stone 4 pounds."