All of these things weigh about 1 kilogramme: an unabridged dictionary, a medium cantaloupe, and a bottle of wine. A litre of water, a pineapple, and a small laptop are some other things that weigh 1 kilogramme.
Kilograms are a part of the metric system, which most of the world uses to measure things. In the metric system, grammes and tonnes, which are also called metric tonnes, are other common ways to measure mass.
A paper clip and a coat button are both things that weigh 1 gramme. One kilogramme is the same as one thousand grammes. About 250 kilogrammes is how much a big motorcycle weighs. Tons are different from tonnes and short tonnes, which are both based on the pound as a unit of weight.
About 2.2 pounds are in one kilogramme. Even though both kilogrammes and pounds are measured on a scale, kilogrammes are used to describe how much matter an object has. The force of gravity on an object is its weight, which is measured in pounds.
The weight of an object changes when the force of gravity changes, but its mass stays the same. If you take a 1 kg object from Earth to the Moon, it has the same mass but a different weight.