Farbbedeckungsberechnung

Farbbedeckungsberechnung

Figure out exactly how much paint to buy before you head to the hardware store. The Paint Coverage Calculator turns your room dimensions into the number of litres or gallons you need and the exact number of cans to buy, with standard deductions for doors and windows, multi-coat support, and a waste factor you can tune.

Nutzung

1. Pick metric (metres, litres) or imperial (feet, gallons).
2. Enter the room length, width, and ceiling height.
3. Tick “Include ceiling” if you plan to paint it as well.
4. Set the number of doors and windows to subtract from the wall area.
5. Choose a finish preset so the coverage rate auto-fills, or enter your own coverage rate from the paint can label.
6. Set the number of coats, your can size, and the waste factor.
7. Read the final results: net paintable area, total paint needed, and exact number of cans to buy.

Funktionen

• Metric and Imperial – Switch between metres/litres and feet/gallons with one click.
• Finish presets – Matte, eggshell, satin, semi-gloss, gloss, and primer all pre-fill a realistic coverage rate.
• Door and window deductions – Standard 1.8 m² door and 1.44 m² window subtractions, based on common residential sizes.
• Optional ceiling – Include or exclude the ceiling in the paintable area with a single checkbox.
• Multi-coat math – Multiplies net area by the number of coats you plan to apply.
• Adjustable waste factor – Slider from 0% to 30% to account for spills, touch-ups, and dry absorption.
• Cans to buy – Rounds up to whole cans so you never run out mid-project.
• Instant summary – One copy-ready line you can paste into your shopping list.

Why It Is Useful

Buying too little paint means a second trip to the store, a mid-project batch mismatch, and visible colour banding on the wall. Buying too much wastes money and leaves you with half-empty cans that dry out in the garage. This calculator uses the same formulas that professional estimators rely on, including the perimeter × height wall area model, standard deductions, and coat and waste multipliers. You get a precise, shoppable answer in seconds.