Enter a room's length, width and height to instantly get floor area, wall area, volume and practical material estimates — paint, flooring and tiles — with a live scale diagram. Add multiple rooms to total a whole project.
No rooms added yet. Fill in the dimensions and click “Add this room to project”.
Enter a room's size and instantly get its area, volume and the materials you'll need — no maths required.
Whether you're buying flooring, ordering paint or sizing an air conditioner, it all starts with accurate numbers. Our free room dimensions calculator takes length, width and height and instantly returns floor area, wall area and room volume, then translates those into practical material estimates so you order the right amount the first time.
Buying too little means a second trip and a colour or batch that doesn't quite match; buying too much wastes money. A quick calculation removes both risks. It's the kind of small step that pays for itself on almost every home project, from a single accent wall to a whole-house refurbishment.
Get floor area, wall area and room volume from three simple measurements.
Estimate how much paint a room needs for the number of coats you plan.
Work out how much flooring or tile to order, with room to spare for cuts.
Work in the units you're comfortable with and get clear, instant results.
The calculator doesn't just give you square footage — it helps you act on it. Floor area tells you how much flooring or tile to buy; wall area tells you how much paint you need for the coverage you want; volume matters for heating, cooling and ventilation sizing. Enter your numbers once and get everything you need to plan the purchase.
Multiply the room's length by its width for floor area. The calculator does this for you and also works out wall area and volume automatically.
It depends on wall area and the number of coats. Enter your room dimensions and the tool estimates the coverage you'll need.
For L-shaped or irregular rooms, split the space into rectangles, calculate each, and add the results together.
Yes, completely free with no sign-up, and you can install Chhimwal as an app for quick access on site.