Ceramic Coating Coverage Calculator
Find out how many millilitres of ceramic coating and how many bottles a car needs from its surface area, the coating’s coverage rate and the number of layers.
How it works
mL needed = area × layers ÷ coverage rate · Bottles = ceil(mL needed ÷ bottle size)
A ceramic coating’s data sheet gives a coverage rate in square metres per millilitre. Multiply your paint area by the number of layers, divide by that rate, and you have the millilitres required; dividing by the bottle size and rounding up gives whole bottles to buy. Coatings are applied in very thin, even passes, so buying a touch extra is wise — running dry mid-panel forces an uneven join.
Worked example
A sedan with 12 m² of paint getting two layers needs to cover 24 m². At 0.6 m² per mL that is 24 ÷ 0.6 = 40 mL — one 50 mL bottle, with 10 mL to spare for trim and wheels.
Frequently asked questions
How much ceramic coating does one car take?
A single layer on an average sedan is roughly 15–25 mL, so a common 30–50 mL bottle covers one to two layers. Larger vehicles and extra layers scale it up — this calculator does the arithmetic for your exact numbers.
Where do I find the coverage rate?
On the product’s technical sheet or bottle. If it is quoted as "covers one car," estimate the rate by dividing a typical 12 m² by the bottle size in mL.
Should I buy extra?
Yes — a little. You cannot stop halfway across a panel to open a new bottle without leaving a mark, so having a small reserve keeps each panel a single continuous application.
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This calculator is for educational purposes. Double-check important results before acting on them.