Enter your room size and get the exact number of gallons to buy — no waste, no extra trips.
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Browse Templates →One gallon of standard latex paint covers approximately 350–400 square feet with one coat. This calculator uses 350 sq ft/gallon to be safe and avoid running short.
Two coats are standard for any color change or fresh drywall. One coat works for touch-ups or same-color refreshes. Always prime bare drywall first — primers are calculated separately.
Yes — round up to the nearest gallon and keep the extra for touch-ups. Matched paint mixed later may not be an exact match.