The Ford F-250 Super Duty is offered with two basic pickup-box lengths: a 6.75-foot box and an 8-foot box. The exact interior dimensions are more useful than the rounded names when you are checking cargo capacity or shopping for a tonneau cover, liner, mat, rack or toolbox.
The current Ford F-250 Super Duty uses 6.75-foot and 8-foot cargo boxes. Published floor lengths are about 81.9 and 98.1 inches, with about 66.9 inches of maximum width, 50.5 inches between the wheelhouses, and 21.1 inches of depth. Older generations can differ.
- F-250 Bed Measurements at a Glance
- 6.75-Foot F-250 Bed Dimensions
- 8-Foot F-250 Bed Dimensions
- F-250 Bed Length vs. Advertised Bed Size
- F-250 Bed Width
- F-250 Bed Depth
- F-250 Model Years Matter
- Which F-250 Cab Gets Which Bed?
- F-250 Bed Measurements for Tonneau Covers
- F-250 Bed Measurements for Other Accessories
- Common F-250 Measurement Mistakes
- Frequently Asked Questions
- Bottom Line
For the current Super Duty generation, the commonly published box measurements are about 81.9 inches of floor length for the 6.75-foot bed and 98.1 inches for the 8-foot bed. Both are about 66.9 inches wide at the broadest interior measurement, about 50.5 inches between the wheel housings, and about 21.1 inches deep.
F-250 Bed Measurements at a Glance
| F-250 box | Nominal size | Floor length | Maximum width | Between wheel wells | Depth | Approx. volume |
|---|---|---|---|---|---|---|
| Short box | 6.75 ft | 81.9 in | 66.9 in | 50.5 in | 21.1 in | 65.4 cu. ft. |
| Long box | 8 ft | 98.1 in | 66.9 in | 50.5 in | 21.1 in | 78.5 cu. ft. |
These figures describe the current aluminum-box Super Duty dimensions and should not be used as a universal chart for every F-250 generation.
6.75-Foot F-250 Bed Dimensions
The F-250’s 6.75-foot box has an interior floor length of about 81.9 inches. Its maximum interior width is about 66.9 inches, while the narrower space between the wheel housings is about 50.5 inches. Bed depth is about 21.1 inches.
Ford offers the 6.75-foot box with selected SuperCab and Crew Cab configurations. The exact cab/box combinations depend on model year and trim, so use Ford’s build information for the truck you are buying rather than assuming every F-250 can be ordered with either box.
8-Foot F-250 Bed Dimensions
The long F-250 box measures about 98.1 inches at the floor. The maximum interior width remains about 66.9 inches, the wheelhouse clearance is about 50.5 inches, and the bed depth is about 21.1 inches.
The long box adds roughly 16.2 inches of floor length compared with the 6.75-foot box. That difference can be important for lumber, long equipment and other cargo that benefits from keeping the tailgate closed.
F-250 Bed Length vs. Advertised Bed Size
The 6.75-foot and 8-foot labels are nominal. They are not the same as the precise interior floor measurement.
That is why an F-250 6.75-foot bed can measure about 81.9 inches rather than exactly 81 inches, and an 8-foot bed can measure about 98.1 inches rather than exactly 96 inches.
When shopping for an accessory, keep both pieces of information: the factory bed designation and your actual measured dimension.
F-250 Bed Width
The F-250 cargo box is roughly 66.9 inches wide at its maximum interior width in the current configuration. The more important measurement for flat cargo is the approximately 50.5-inch distance between the wheel housings.
This distinction matters when loading sheet goods. A 4×8 sheet is 48 inches wide, so the wheel-well clearance provides enough nominal width for the sheet to sit between the housings. Length is a separate limitation: a 96-inch sheet is longer than the 81.9-inch short box floor and slightly shorter than the 98.1-inch long box floor.
F-250 Bed Depth
The current F-250 box is approximately 21.1 inches deep. Depth is measured vertically from the cargo floor to the top of the bed wall.
Depth affects how much loose or stacked cargo can sit below the rail and how much side-wall clearance an accessory needs. It is also relevant when comparing older F-250 generations because bed depth and box construction have changed over time.
F-250 Model Years Matter
Do not assume every F-250 has the same bed dimensions.
A major modern fitment breakpoint is the 2017 Super Duty redesign. Current-generation dimensions around 81.9 and 98.1 inches, 66.9 inches of maximum width and 50.5 inches between wheelhouses should not automatically be applied to older trucks.
For example, published specifications for earlier Super Duty generations show different box widths and slightly different floor lengths. If you are buying a used-truck accessory, verify the exact model year before ordering.
Which F-250 Cab Gets Which Bed?
Ford’s current F-250 lineup uses different cab and box combinations rather than offering one universal bed.
The Regular Cab is associated with the 8-foot box. The SuperCab can be configured with a 6.75-foot or 8-foot box. The Crew Cab can also be configured with a 6.75-foot or 8-foot box, depending on the model and configuration.
The important point is that the cab alone does not always identify the bed. Check the vehicle’s configuration or measure the truck.
F-250 Bed Measurements for Tonneau Covers
If you are buying a tonneau cover, the 6.75-foot and 8-foot labels are useful starting points, but they are not sufficient by themselves.
Confirm:
- model year and generation;
- cab configuration;
- exact box length;
- whether the truck has factory cargo rails or other bed hardware;
- bed liner type;
- tailgate configuration; and
- the tonneau manufacturer’s exact fitment listing.
The current F-250 box is also sold with accessories that use the bed rails and cargo area. A cover that matches the nominal length can still be incompatible with a particular rail system or hardware arrangement.
For a general explanation of measuring a truck bed, see Truck Bed Dimensions: Complete Guide to Length, Width & Depth. For cover-specific measurement, use the separate How to Measure Your Truck Bed for a Tonneau Cover guide.
F-250 Bed Measurements for Other Accessories
Bed mats and liners
Mats and liners are shaped around a particular box. Confirm the exact bed length and model-year application before buying.
Toolboxes
A toolbox must clear the side walls and wheel housings and may occupy space needed by a tonneau cover or other cargo-management equipment.
Bed racks
Rack systems can use the bed rails, stake pockets or other mounting points. Bed length is only one part of compatibility.
Bed drawers and slides
These systems need accurate floor dimensions and may be sold separately for 6.75-foot and 8-foot boxes.
Common F-250 Measurement Mistakes
Assuming 6.75 feet equals 81 inches. The factory designation is nominal; the measured floor length is about 81.9 inches in the current box.
Using the outside width. The truck’s body width is not the same as the cargo-box width.
Ignoring the wheel housings. The 50.5-inch wheel-well measurement is far more useful for flat cargo than the maximum 66.9-inch width.
Using current measurements on an older F-250. Generational changes can affect accessory fitment.
Ordering by bed length alone. Rails, liners, tailgates and factory equipment can change compatibility.
Frequently Asked Questions
How long is the F-250 6.75-foot bed?
The current F-250 6.75-foot box measures about 81.9 inches along the floor.
How long is the F-250 8-foot bed?
The current F-250 8-foot box measures about 98.1 inches along the floor.
How wide is an F-250 bed?
The current box is about 66.9 inches wide at its maximum interior width and about 50.5 inches between the wheel housings.
How deep is the F-250 bed?
The current box is approximately 21.1 inches deep.
Will an F-250 6.75-foot tonneau fit every F-250 with a 6.75-foot bed?
No. Verify the model year, generation, rail configuration, tailgate, liner and the cover manufacturer’s exact fitment.
Bottom Line
For the current Ford F-250, the two main box choices are approximately 81.9 inches long for the 6.75-foot bed and 98.1 inches for the 8-foot bed. Both are about 66.9 inches wide at the maximum interior width, 50.5 inches between the wheel housings and 21.1 inches deep.
Those numbers are a useful starting point, but exact fitment always depends on the truck’s model year and configuration. Measure the actual truck and confirm the accessory’s application before ordering.
