Grains to Stone (gr to st) Converter

How to convert grains to stone

Formulast = gr × 0.00001020408163

Because one stone equals 98,000 grains, you can also divide: st = gr ÷ 98,000.

A grain is smaller than a stone: it takes 98,000 grains to make one stone.

Worked examples

1 grain1 gr × 0.00001020408163 = 0.00001020408163 st
5 grains5 gr × 0.00001020408163 = 0.00005102040816 st
10 grains10 gr × 0.00001020408163 = 0.0001020408163 st
20 grains20 gr × 0.00001020408163 = 0.0002040816327 st
100 grains100 gr × 0.00001020408163 = 0.001020408163 st

Grains to stone conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Grains to stone: 0.1–10 gr
Grains (gr)	Stone (st)
0.1 gr	0.0000010204082 st
0.25 gr	0.0000025510204 st
0.5 gr	0.0000051020408 st
1 gr	0.000010204082 st
2 gr	0.000020408163 st
3 gr	0.000030612245 st
4 gr	0.000040816327 st
5 gr	0.000051020408 st
6 gr	0.00006122449 st
7 gr	0.000071428571 st
8 gr	0.000081632653 st
9 gr	0.000091836735 st
10 gr	0.00010204082 st

Grains to stone: 12–1,000 gr
Grains (gr)	Stone (st)
12 gr	0.00012244898 st
15 gr	0.00015306122 st
20 gr	0.00020408163 st
25 gr	0.00025510204 st
30 gr	0.00030612245 st
40 gr	0.00040816327 st
50 gr	0.00051020408 st
75 gr	0.00076530612 st
100 gr	0.0010204082 st
250 gr	0.0025510204 st
500 gr	0.0051020408 st
1,000 gr	0.010204082 st

About the units

Grain (gr)

Exactly 64.79891 mg; 7,000 grains make a pound. Used for bullets, arrows and some medicines. One grain equals 0.00006479891 kilograms (kg).

Stone (st)

Fourteen pounds (6.35029318 kg). Body weight in the UK and Ireland is often quoted in stones and pounds.

Frequently asked questions

How many stone are in one grain?

There are 0.00001020408163 stone in one grain, and this value is exact by definition.

How do I convert grains to stone?

Multiply the number of grains by 0.00001020408163. For example, 10 gr × 0.00001020408163 = 0.0001020408163 st.

How many grains are in one stone?

One stone equals 98,000 grains. That is the reverse factor, 1 ÷ 0.00001020408163.

What is 10 grains in stone?

10 gr = 0.0001020408163 st.

Is this gr to st converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Grains to Stone Converter