How many grains are in one stone?

One stone contains exactly 98,000 grains. This is 14 pounds times 7,000 grains per pound.

Why is this number so clean?

Both factors are clean: 14 (pounds per stone) and 7,000 (grains per pound). Their product 98,000 = 14 x 7,000 inherits roundness from both parents.

How do I convert stones to grains?

Multiply stones by 98,000. For example, 10 stones equals exactly 980,000 grains.

Stones to Grains (st to gr) Converter

1 st = 98,000 gr

1 Stone equals 98,000 Grains (1 st = 98,000 gr). Convert Stones to Grains with formula, table, and examples.

One stone equals exactly 98,000 grains. This impressively round number comes from 14 pounds per stone times 7,000 grains per pound. The clean factor of 98,000 reflects the stone's perfect integration into the avoirdupois system's internal arithmetic, producing an exact five-digit number with no decimals.

How to Convert Stones to Grains

gr = st × 98,000

Multiply the value in Stones by 98,000

Take your value in Stones
Multiply by 98,000
Read the result in Grains

Common Stones to Grains Conversions

Stones (st)	Grains (gr)	Status
0.005 st	490 gr
0.01 st	980 gr
0.05 st	4,900 gr
0.1 st	9,800 gr
0.5 st	49,000 gr
1 st	98,000 gr
2 st	196,000 gr
5 st	490,000 gr
8 st	784,000 gr
10 st	980,000 gr
14 st	1,372,000 gr
20 st	1,960,000 gr
50 st	4,900,000 gr

Good to Know About Stones to Grains Conversion

The 98,000-grain stone demonstrates the avoirdupois system at its cleanest. The chain from grain to pound (7,000:1) to stone (14:1) produces 98,000 with no rounding anywhere. This internal precision is the hallmark of a system designed for merchants who needed exact arithmetic without calculators, where every factor was chosen for its divisibility properties.

Stones to Grains: What You Need to Know

This conversion is primarily of mathematical interest. The grain's main modern use is in ammunition measurement, while the stone measures body weight. No practical scenario bridges these two applications.

What is a Stone? st

A British unit of mass equal to 14 pounds or approximately 6.35 kilograms. Commonly used in the UK and Ireland for body weight.

Imperial body weight (UK/Ireland) horse racing

Learn more about Stone →

What is a Grain? gr

A grain is a unit of mass equal to exactly 64.79891 milligrams. It is the same in the avoirdupois, troy, and apothecaries' systems, derived from the 1959 international agreement defining the pound as exactly 0.45359237 kilograms.

Imperial Troy Apothecaries ammunition weight bullet measurement historical pharmacy

Learn more about Grain →

Going the other way? Use our Grains to Stones converter.

Stones to Grains FAQ

One stone contains exactly 98,000 grains. This is 14 pounds times 7,000 grains per pound.
Both factors are clean: 14 (pounds per stone) and 7,000 (grains per pound). Their product 98,000 = 14 x 7,000 inherits roundness from both parents.
Multiply stones by 98,000. For example, 10 stones equals exactly 980,000 grains.

Non-Frequently Asked Questions About Stones to Grains

Questions nobody should ask - but someone did.

A typical 150-grain rifle bullet weighs... well, 150 grains. One stone (98,000 grains) would equal about 653 such bullets. At roughly 30 grams each, 653 bullets would indeed weigh about 19.6 kilograms or 14 pounds, confirming the math and providing a strangely militaristic way to conceptualize body weight.
It is the roundest internal stone conversion, meaning within the avoirdupois system. 98,000 beats 3,584 drams and 224 ounces for sheer roundness. The metric conversions (6,350.29 grams, etc.) are all messy decimals because the stone was not designed for metric compatibility.
Counting 98,000 grains at one per second takes about 27.2 hours. Unlike some of the trillion-scale conversions elsewhere on this site, this is actually achievable in a single very long day, though the practical utility of counting 98,000 individual weight-grains of barley is questionable at best.