Extend your measuring tape longways in the center of the bed to the far end up against the bulkhead.
How to measure truck bed size for tonneau cover.
This is the first thing you need to know and for some trucks the only thing.
Measure your truck bed length your truck bed length is determined by the distance between the inside of your tailgate and the inside of the bulkhead.
How to measure your bed size.
In order to ensure you re purchasing the correct size for your tonneau cover or bed rails you ll want to make sure that your bed is being measured correctly.
The model that you purchase needs to be the model made specifically for your bed size.
When you measure truck bed length you may find that the exact number does not match any lengths listed on our product pages.
You can do this by simply dividing the number of inches your tape measure will show total inches as well as feet by 12.
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.
The last measurement you will need is the length of the truck bed.
Take your measurement at where the bed ends and the tailgate begins.
Record the measurement in inches.
Trucks usually come in 2 3 different bed sizes the most common being 5 5 foot 6 5 foot or 8 foot.
First up bed length.
Measure the distance between the bed rails starting from inside to inside of the rail.
Put down the tailgate and stand at the end of the bed.
Your new tonneau cover must be an inch or half an inch less the dimensions you get here.
A lot of people think you need to measure the bed rail caps or something like that but you ll need to just extend your tape.
I ve already got a tonneau cover so let me just fold this back for you.