Take the measurements from where the tailgate begins until where the bed ends.
How to measure a truck bed for a tonneau cover.
Your new tonneau cover must be an inch or half an inch less the dimensions you get here.
The last measurement you will need is the length of the truck bed.
Extend your measuring tape longways in the center of the bed to the far end up against the bulkhead.
Get the truck bed s length.
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Step 2 moving along your bed rail extend the measuring tape to the inside edge of the top of your tailgate.
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Most bed lengths of tonneau covers are rounded so your number should be within in 1 2 inches.
You can do this by simply dividing the number of inches your tape measure will show total inches as well as feet by 12.
Record the measurement in inches.
Extend the measuring tape to the far end of the bed in the center and up against the bulkhead.
First up bed length.
Put down the tailgate and stand at the end of the bed.
Measure the distance between the bed rails starting from inside to inside of the rail.
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This is the first thing you need to know and for some trucks the only thing.
More helpful measuring information.
Place your measuring tape at the bulkhead of your truck bed.
Inches to feet conversion there are 12 inches in a foot so divide total number of inches by 12 to get your measurement in feet.
Take your measurement at where the bed ends and the tailgate begins.
If you are fitting your truck bed for something like a bed rug or a tonneau cover you may need to know its dimensions in fractions for instance 6 2 feet.
Bulkhead wall like structure located at the front of the bed to protect driver from cargo.