ArtCalcs.uk
Paint Cost Calculator
Estimate the total cost of paint needed for your project based on volume, tube size and price.
Add extra paint for palette waste and mixing losses
How We Calculate This
Tubes needed = ⌈Total ml needed ÷ Tube size in ml⌉ (rounded up to a whole tube)
Total cost = Tubes needed × Price per tube
When wastage is enabled, your volume is multiplied by the wastage factor (default 1.1 = 10% extra) to allow for palette waste, dried paint and mixing losses. You can also add a few extra tubes as safety stock under Advanced options.
Frequently Asked Questions
Almost always yes. The price per ml drops significantly as tube size increases. A 120ml tube typically costs 1.5-2x the price of a 37ml tube but contains 3.2x the paint. For colours you use frequently (white, earth tones), buying 200ml or 500ml sizes saves significant money.
Paint pricing is based on pigment cost. Cadmium, cobalt and genuine ultramarine pigments are expensive to produce. Student-grade paints use cheaper synthetic alternatives. Series numbers (1-5 or A-E) on professional paints indicate the pigment cost tier.
As a rough rule of thumb, a medium-sized painting (60×80cm) in acrylics applied thinly to a medium thickness uses on the order of 50-100ml of paint total across all colours. Oil paintings tend to use slightly less. Large-scale or heavily impasto works can use several hundred ml, so always treat this as an order-of-magnitude estimate rather than a fixed figure. White is typically 30-40% of total paint consumption.
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Last updated: February 2026
All calculations are estimates. Always verify quantities before purchasing materials.