Whether you're painting, installing new flooring, or purchasing lumber, you'll need to take careful measurements to make sure you get the size and quantity of materials right. Before you go to the home improvement store to purchase building materials, use our calculators to estimate what you need. Save yourself the hassle of buying too much and wasting money or buying too little and having to return to the store to get more. Nail your next remodeling project with our easy-to-use tools that calculate just how much of each material you'll need.