Convert Grain to kilograms
Western Europe · European Weight · active · modern
Conventional value The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact.
1 Grain = 0.0000648 kilograms
kilograms = Grain × 0.0000648
Convert any amount
Grain to kilograms table
| Grain | kilograms |
|---|---|
| 0.25 Grain | 0.0000162 kilograms |
| 0.5 Grain | 0.0000324 kilograms |
| 1 Grain | 0.0000648 kilograms |
| 2 Grain | 0.0001296 kilograms |
| 3 Grain | 0.0001944 kilograms |
| 4 Grain | 0.0002592 kilograms |
| 5 Grain | 0.000324 kilograms |
| 10 Grain | 0.000648 kilograms |
| 20 Grain | 0.001296 kilograms |
| 25 Grain | 0.00162 kilograms |
| 50 Grain | 0.00324 kilograms |
| 100 Grain | 0.00648 kilograms |
About the Grain
Smallest traditional weight. 1 Pennyweight = 24 Grains.
- Symbol
- gr
- Value in SI
- 1 Grain = 0.0000648 kilogram
- Typical use
- jewellery, precious-metals
- Source
- UnitConvertLab measurement atlas
Every atlas conversion routes through the SI kilogram. See our methodology and data provenance pages for how these values are sourced and verified.
Related units and variant risk
Other european weight units in the Western Europe family, least settled first. If your figure came from a land record, invoice or historical document rather than a calculator, check these before assuming a single standard.
Related conversions
Frequently asked
How many kilograms are in a Grain?
1 Grain = 0.0000648 kilograms. Multiply the number of Grain by 0.0000648 to get kilograms.
What is Grain used for?
Smallest traditional weight. 1 Pennyweight = 24 Grains. It is classified as active and dates from the modern period.
Is the Grain value exact?
Yes for practical purposes. UnitConvertLab converts every atlas unit through the SI kilogram, so the arithmetic itself introduces no rounding beyond the digits shown.
How reliable is this Grain conversion?
Conventional value — The unit is customary but its modern value is settled and widely cited; the arithmetic itself is exact. Source: UnitConvertLab measurement atlas.
Cite this page
UnitConvertLab. (2026). Convert Grain to kilograms. UnitConvertLab. Retrieved from https://unitconvertlab.com/regional/grain-to-kilogram
Report an incorrect value or source
Regional units vary by district and by century. If this figure, its variant list or its citation is wrong where you are, tell us — the report carries the page context automatically.