To determine the sheet size of a bed, measure the length, width and depth of the mattress, and compare it to a standardized size chart. Once you have the dimensions of the mattress, you know what type of sheets to buy or make for your bed.
- Measure the length
Using a measuring tape, find the length of the bed from the top of the mattress where the head goes to the bottom of the mattress where the feet go. Make a note of the measurement.
- Measure the width
Take the measuring tape and find the width of the bed from one side to the other. Record the measurement.
- Measure the depth
Measure the top mattress' depth by stretching the measuring tape from the top of the mattress to the bottom. If the bed has a pillow top or foam layer, include this in your measurement.
- Use the measurements to determine the mattress' size
Compare your mattress' measurements to standard size charts to determine your bed and sheet size.