The thickness of your pavers will depend on the weight they will be supporting. A general rule of thumb is to use pavers that are at least 4 inches thick. This will provide enough weight to support a car or small truck. If you are using pavers for a walkway, then you can use thinner pavers that are 2-3 inches thick.

There is no set standard for how thick pavers need to be for a driveway, but it's generally recommended that they be at least 2 inches thick. This will help ensure that they're durable and can withstand the weight of vehicles driving over them.