Assuming you would like an in-depth answer:
A 4x4 conversion generally costs between $1,500 and $3,000. The cost will depend on the specific vehicle being converted and the extent of the conversion. For example, a simple conversion that only involves adding a few new parts to an existing 4x4 drivetrain will be less expensive than starting from scratch with a completely new drivetrain. The most important factor in determining the cost of a 4x4 conversion is the labor involved. If you are doing the work yourself, then your only costs will be for parts and any necessary tools. If you are hiring someone to do the work for you, then their labor rates will be the biggest factor in determining the overall cost.