Paint Calculator

Buying too little paint means an awkward mid-project trip back to the store, while buying too much wastes money on cans you will never use — this calculator helps you land right in between. It works out the actual paintable wall area by subtracting the space taken up by doors and windows, then calculates exactly how many gallons you need based on the number of coats and your paint's coverage rating. Whether you are painting a single bedroom yourself or quoting a full-house repaint as a contractor, this gives you a shopping list number you can trust, along with an estimated material cost so there are no surprises at checkout.