How To Measure Bathtub Drain Plug Size

How to Measure Bathtub Drain Plug Size

Replacing a bathtub drain plug is a simple repair, but it's important to get the right size plug. If the plug is too small, it will leak. If it's too large, it won't fit. Here's how to measure the size of your bathtub drain plug:

Materials You'll Need

Measuring tape or ruler

Steps

Remove the old drain plug. Most drain plugs are held in place by a screw or bolt. Use a screwdriver or wrench to remove the screw or bolt, and then pull the plug out.
Measure the diameter of the drain hole. Use a measuring tape or ruler to measure the diameter of the drain hole. The diameter is the distance from one side of the hole to the other.
Measure the length of the drain plug. Use a measuring tape or ruler to measure the length of the drain plug. The length is the distance from the top of the plug to the bottom of the plug.
Choose a new drain plug. When choosing a new drain plug, make sure that the diameter of the plug is the same as the diameter of the drain hole. The length of the plug should be at least as long as the length of the old plug.

Tips

If you don't have a measuring tape or ruler, you can use a penny to measure the diameter of the drain hole. A penny is about 19 millimeters in diameter.
If the drain hole is not perfectly round, measure the diameter of the widest part of the hole.
When choosing a new drain plug, make sure that the material of the plug is compatible with the material of your bathtub. For example, if your bathtub is made of porcelain, you should choose a porcelain drain plug.