A wood chipper is a machine that grinds or chips branches, brush, and small trees into wood chips. It is used to manage forestry or garden waste, produce biofuel, or aid in composting.

There are electric, petrol-powered, and PTO (tractor-driven) wood chippers. Electric models are best for light garden use, petrol-powered chippers are more mobile and powerful, while PTO models are ideal for farms and forestry with large volumes of material.

Wood chippers can handle branches, twigs, brush, and in some cases small trunks—depending on the machine's capacity. The maximum branch diameter varies but typically ranges from 4 to 20 cm depending on the model. Always check the manufacturer’s specifications.

Wood chips can be used as biofuel in chip-fired boilers, as mulch for gardens, for pathways and riding tracks, or composted into humus. Chipping is an efficient way to recycle organic material locally.