Coats and containers answer different questions. Coats multiply the area paint must cover; container volume determines how litres or gallons can be purchased. Calling both one vague extra hides the final quantity. PaintCalc requires one to ten whole coats, uses coverage you supply, and shows exact volume before package rounding. It does not decide whether a wall needs one, two, or more coats and never inserts waste, touch-up, or reserve paint. Different paints or coat counts should be calculated as separate projects.
Choose coats from project guidance
Consult exact instructions and assess preparation, previous colour, finish, and application. Two coats count each unit of net area twice. Whole coats model complete passes, not partial walls. Primer is excluded: do not use its coverage as finish paint or combine volumes. Enter the net contents of the container you can actually buy, not a marketing name. Required volume divided by container volume rounds upward; 1.01 containers requires two when only that size exists. The difference is package rounding, not coverage correction, another coat, or advice to keep leftovers.
Apply price after package rounding
Optional cost is rounded whole containers multiplied by your entered price. It does not use unrounded volume because shops normally sell whole units. Confirm currency and tax treatment. PaintCalc does not optimize mixed container sizes, convert currencies, retrieve live prices, add delivery, discounts, labour, tools, primer, or other materials. A cheaper total is not a recommendation. Compare practical sizes separately and check tint consistency and return rules. Before ordering, verify product code, colour, finish, batch guidance, net contents, coverage, price, and final quantity with the supplier or painter.