Paint Calculator
Calculate exactly how much paint you need for your next project
Calculate Your Paint Needs
Your Paint Calculation Results
For your painting project, you’ll need:
Coverage: 350 sq ft per gallon
Remember to buy 10-15% extra paint for touch-ups and coverage variations.
Painting Guide & Tips
How to Calculate Paint Like a Pro
Calculating the right amount of paint for your project is essential to avoid wasted money or multiple trips to the store. Our paint calculator simplifies this process by considering all important factors:
- Wall Area: Measure height and width of each wall then add them together
- Subtract Openings: Deduct areas for windows and doors (approx 20 sq ft per door, 15 sq ft per window)
- Surface Texture: Rough surfaces require up to 20% more paint
- Color Changes: Dark to light transitions may need extra coats
- Paint Quality: Premium paints offer better coverage with fewer coats
Choosing the Right Paint
Selecting the appropriate paint type makes a significant difference in your results:
(350-400 sq ft/gal)
(300-350 sq ft/gal)
(200-300 sq ft/gal)
Professional Painting Tips
Prep is Key: Clean walls thoroughly and repair imperfections before painting
Quality Tools: Invest in good brushes and rollers for smoother application
Test Colors: Paint swatches on your wall to see color in different lighting
Temperature Matters: Paint between 50-90°F for best results
Ventilation: Ensure proper airflow, especially with oil-based paints
Use our calculator to get an accurate estimate for your project, then visit your local paint store with confidence!
- What is a paint calculator?
A tool that helps estimate how much paint is needed based on the area you plan to cover. - How does the paint calculator work?
You input wall dimensions, number of coats, and it calculates the paint quantity needed. - Is this paint calculator free to use?
Yes, it's 100% free and accessible online. - Can I use it for both interior and exterior walls?
Absolutely, it works for both types of painting. - How accurate is the paint calculator?
It provides a close estimate, assuming standard paint coverage (usually 350–400 sq ft per gallon or 10–12 sq m per litre). - What details do I need to use the calculator?
Room dimensions (length, width, height), number of doors/windows, and desired coats. - Can I choose the number of coats?
Yes, the calculator lets you select how many coats of paint you plan to apply. - Does it consider paint loss during application?
Yes, the estimate includes a margin for paint wastage. - How much paint do I need for a 10x10 room?
It depends on height, number of coats, and surface conditions—use the calculator for exact values. - Can I calculate paint cost as well?
Yes, if you input the price per litre/gallon, it will give a total cost estimate. - What if I’m painting only one wall?
You can enter the dimensions of just that wall in the tool. - Does the calculator account for doors and windows?
Yes, you can subtract the area for each door or window to get a more precise estimate. - How many litres of paint do I need per square metre?
Typically, 1 litre covers 10–12 sq meters per coat. - Can I use this calculator for ceilings too?
Yes, just enter ceiling dimensions as flat surfaces. - Is this tool mobile-friendly?
Yes, it works on mobile devices, tablets, and desktops. - Does this tool support multiple rooms?
Yes, you can calculate each room separately or total the area. - What is paint coverage?
It's the area (in sq ft or sq m) that a litre or gallon of paint can cover. - Can I save or print the result?
Yes, you can take a screenshot or print the results page. - How much does a gallon/litre of paint cover?
Usually 350–400 sq ft per gallon or 10–12 sq m per litre (per coat). - Who should use a paint calculator?
Homeowners, interior designers, painters, and DIYers can all benefit from using it.
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