Forklift Capacity Explained: Load Center, Lift Height and Attachments
A forklift listed at 5,000 lb won’t always lift 5,000 lb. Rated capacity assumes a certain load size and lift height. Here’s how to read it so you buy a truck that handles your real loads safely.
Rated capacity and the load center
Capacity is rated at a load center, usually 24 inches: the distance from the front of the forks to the center of the load. A standard 48-inch pallet loaded evenly has its center about 24 inches out. If your loads are longer, or heavy at the far end, the center moves out and the truck can safely lift less.
Lift height
Many forklifts can’t lift their full rated capacity to the top of the mast. The data plate lists what the truck can carry at its maximum height. If you stack high, check the capacity at that height, not just the headline number.
Attachments
Side shifters, fork positioners, clamps and extensions add weight and push the load forward, which lowers capacity. A truck with an attachment should have a data plate that shows its capacity with the attachment.
Choosing the right size
- Weigh your heaviest regular load and note its size.
- Measure how high you need to lift it (top of your racking or truck bed, plus clearance).
- Check your doorways, ceilings and aisle widths so the truck fits where it has to go. Narrow aisles may call for a reach truck.
- Pick a truck with some capacity to spare at that height rather than one right at its limit.
Common sizes
Most warehouse and shop work is done with forklifts in the 3,000 to 6,000 lb range. Every listing on our site shows capacity, mast and lift height. Tell us your heaviest load and how high it goes, and we’ll help you pick.