---
title: "Grains to Stone — gr to st converter"
description: "1 grain = 0.0000102 stone. Convert grains to stone with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/grains-to-stone/
site: "At One Place"
---

# Grains to stone

**1 grain in stone: 1 gr = 0.0000102 st**

st = gr × 0.000010204082

To convert grains to stone, multiply by 0.000010204082. The table below gives the values people look up most often, and the converter works for any number.

## Grains to stone table

*Common grain values converted to stone.*

| Grains | Stone |
| --- | --- |
| 1 gr | 0.0000102 |
| 2 gr | 0.00002041 |
| 3 gr | 0.00003061 |
| 4 gr | 0.00004082 |
| 5 gr | 0.00005102 |
| 10 gr | 0.000102 |
| 15 gr | 0.0001531 |
| 20 gr | 0.0002041 |
| 25 gr | 0.0002551 |
| 30 gr | 0.0003061 |
| 40 gr | 0.0004082 |
| 50 gr | 0.0005102 |
| 75 gr | 0.0007653 |
| 100 gr | 0.0010204 |
| 250 gr | 0.002551 |
| 500 gr | 0.005102 |
| 1,000 gr | 0.010204 |

## How the conversion works

The relationship is st = gr × 0.000010204082. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

## Common questions

### How many stone are in one grain?

One grain equals 0.0000102 stone. st = gr × 0.000010204082.

### How do you convert grains to stone?

Use st = gr × 0.000010204082. So 10 gr is 0.000102 st.

### How many grains are in one stone?

One stone equals 98,000 grains, which is the reverse of the conversion above.

## Related pages

- [Stone to Grains](https://atoneplace.net/convert/stone-to-grains/)
- [Grains to Kilograms](https://atoneplace.net/convert/grains-to-kg/)
- [Grains to Grams](https://atoneplace.net/convert/grains-to-grams/)
- [Grains to Milligrams](https://atoneplace.net/convert/grains-to-mg/)
- [Grains to Tonnes](https://atoneplace.net/convert/grains-to-tonnes/)
- [Grains to Pounds](https://atoneplace.net/convert/grains-to-lbs/)
- [Grains to Ounces](https://atoneplace.net/convert/grains-to-oz/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)