MyBuildMath is a free collection of calculators for home improvement and construction projects in the United States and Canada.
Why this site exists
Buying too much material wastes money. Buying too little means a second trip to the store and a project that stalls halfway. A quick, accurate estimate before you buy solves both problems, and that is what this site is for.
How we build our calculators
Every calculator shows the formula it uses, with a worked example.
We test each calculator against hand calculations before it goes live.
You can switch between imperial and metric units.
No sign-up is needed, and the calculators are free to use.
Who runs this site
MyBuildMath is an independent website built and maintained by a web designer. We are not licensed contractors or engineers, and our calculators do not replace professional advice for structural, electrical, or code-related work.
Found a mistake?
If a result looks wrong, please tell us. Email indrprtsngh@gmail.com with the calculator name and the numbers you entered, and we will check it.