The Home Depot Design Centre Interior Paint Calculator (metric)

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paint calculator

Click here to view the Paint Calculator using Standard measurements.

To accurately estimate the amount of paint you need to cover your walls and trim, just fill in the blanks and hit "calculate" to tabulate your results.

calculator inputs

Room Wall Sizes

Room Length: m. cm.  
Room Width: m. cm.  
Room Height: m. cm.  
Baseboard Height:   cm.  

Windows

Number of Windows:    
Window Height: m. cm.  
Window Width: m. cm.  
Moulding/Trim Size:   cm.  

Doors

Number of Doors:    
Doors Height: m. cm.  
Doors Width: m. cm.  
Moulding/Trim Size:   cm.  

If you have windows or doors with different heights and widths, average the window or door dimensions. For example, one 3 x 5 window and one 5 x 7 window would be approximately two 4 x 6 windows.

Paint Coverage

 square metres per litre

8.6 square metres per litre is the industry average. If you know the exact number for your specific paint, enter it.

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calculator results

Wall Paint: litres
Ceiling Paint: litres
Trim Paint: litres
Baseboard Paint: litres

Please Note: Calculator Results have been rounded up to the nearest whole number.

Important Disclaimer: This calculator is provided for general information and illustration purposes only; the results are to be used only as estimates and are not intended as definitive advice or as a resource applicable to any specific circumstance and should not be relied upon or used as such. The Home Depot cannot guarantee that you will achieve proper results without verifying your measurements and assumptions. For specific advice regarding your project, you should engage the services of an associate in your local Home Depot store.