The short answer: measure the bed length inside, from the bulkhead to the closed tailgate, then match the cab style and wheelbase. Common pickup bed lengths are about 5.5–5.8 ft (short), 6.5–6.75 ft (standard) and 8 ft (long).
Measure in three steps
- Length: inside, from the bulkhead behind the cab to the inside of the closed tailgate.
- Width: between the wheel wells, and again at the side walls.
- Depth: from the bed floor to the top of the side rail.
Write the numbers down in inches as well as feet. “6.5 ft” is easier to compare when you also know it is 78 inches.
Common lengths by truck
| Truck | Short | Standard | Long |
|---|---|---|---|
| Ford F-150 | 5.5 ft | 6.5 ft | 8 ft |
| Ford Super Duty F-250 / F-350 | 6.75 ft | — | 8 ft |
| Chevrolet Silverado 1500 / GMC Sierra 1500 | 5.8 ft | 6.5 ft | 8 ft |
| Chevrolet Silverado 2500HD / 3500HD | 6.9 ft | — | 8 ft |
| Ram 1500 | 5.7 ft | 6.4 ft | 8 ft |
| Ram 2500 / 3500 | 6.4 ft | — | 8 ft |
| Toyota Tundra | 5.5 ft | 6.5 ft | 8 ft |
Generations change. Confirm the exact year and trim before you buy; the table is a starting point, not a fitment guarantee.
Cab, wheelbase and dually
- Cab style — regular, extended, crew or mega cab changes the cab-to-axle distance.
- Wheelbase — a bed can be the right length but sit wrong over the rear wheels.
- Dually — dual rear wheel beds have wider arches and different mounting.
Send your VIN or year, make, model, cab and the measurement you took. We will check it against the listing before you pay.
Browse by size: 8 ft beds, 6.5 ft beds, short beds and dually beds.
Common questions
How do I measure my truck bed?
Measure inside the bed from the bulkhead behind the cab to the inside of the closed tailgate. Measure width between the wheel wells and at the walls, and measure depth from the floor to the top rail.
Is a 6.5 ft bed the same as 6 ft 6 in?
Yes. 6.5 ft and 6 ft 6 in are the same 78-inch bed, written two ways. Short beds are usually around 5.5 to 5.8 ft, and long beds are 8 ft.
Does cab style change which bed fits?
It can. Crew and extended cabs position the bed differently, and the cab-to-axle measurement must match. Always confirm cab style along with bed length.
What is cab-to-axle?
The distance from the back of the cab to the centre of the rear axle. It matters most on flatbeds, chassis-cab trucks and commercial bodies.
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