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Ceramic Coating Coverage Calculator

Pick your vehicle size and number of coats to see how much ceramic coating you need.

How it is calculated

The tool multiplies a fixed per-coat amount for your size class by the number of coats: mL = base × coats. The base amounts are 30 mL for a small car, 40 mL for a midsize car, 55 mL for an SUV and 70 mL for a truck. It then converts to bottles with bottles = ceil(mL ÷ 30), rounding up because bottles come in 30 mL units. Coats must be greater than zero and can be fractional (1.5 coats of a midsize car is 60 mL). These are planning averages, not manufacturer figures, so they ignore wheels, glass, trim and any product lost on applicators; check the amount recommended by your coating's maker.

Worked example

You are coating an SUV with 2 coats. Base for an SUV is 55 mL per coat, so 55 × 2 = 110 mL. Bottles: 110 ÷ 30 = 3.67, rounded up to 4. Result: 110 mL, i.e. 4 × 30 mL bottles, with 10 mL of margin left over.

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Common mistakes

  • Choosing the size class by how big the vehicle feels instead of its painted area. A long, low sedan can be closer to midsize than to an SUV.
  • Counting the number of bottles as the mL figure. 110 mL is the product volume, and the bottle count is a separate line.
  • Planning to coat wheels, glass or trim from the same estimate. The base amounts are for paint only, so extra surfaces need extra product.
  • Entering 0 for coats when only a prep layer or primer is planned. Coats must be at least a positive number, and a primer is not a coat of the coating.
  • Treating the 10 mL left over as spare. Absorbed by applicator towels, it is usually needed, so buying exactly to the calculated mL leaves no safety margin.

About this calculator

Ceramic coating coverage scales with a vehicle’s painted surface area, so detailers estimate need by size class — coupe or sedan, midsize SUV, and full-size truck or SUV each have a rough milliliter range per coat — and then multiply by the number of coats applied, since most professional-grade coatings call for two layers for durable protection. A typical single-coat sedan application runs in the range of tens of milliliters, and coating is usually sold in small 30 mL bottles because the product spreads extremely thin.

Auto detailers and enthusiasts use this kind of estimate to know how many bottles to buy before starting a job, since running out mid-application on a curing product can leave inconsistent gloss or protection.

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Comments (1)

  • Editorial team

    The amounts are planning averages by vehicle class, not a label rating, so check the bottle's own coverage guidance. An SUV with 2 coats comes out at 110 mL, or 4 bottles of 30 mL, even though the last bottle is barely used. Buying extra for a second pass over trim and glass is cheaper than running short mid-job. Which vehicle and coating are you applying?

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