| Gramme (weight of 1 cubic centimètre of water in its state of maximum density, or 39½° Fahr., or 4 degrees centigrade) | 15·4325 | grains troy. |
| Décagramme (10 grammes) | 6·43 | dwt. |
| Hectogram. (100 grammes) | 3·527 | oz. avoir. or 3·216 oz. troy. |
| Kilogram. (1,000 grammes) | 2·2055 | lb. avoir. or 2·6803 lb. troy. |
| Quintal métrique (100 kilogs.) | 220·548 | lb. |
| Millier, tonneau de mer (1,000 kilogrammes) | 19 cwt. 12 oz. 5 dwt. |
| Décigram. (10th of 1 gram.) | 1·5432 | grain. |
| Centigramme (100th do.) | 0·15432 | grain. |
| Milligramme (1,000th do.) | 0·015432 | grain. |