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title: "How many liters of paint does a room need? | Frequently Asked Questions | Time Paints"
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# How many liters of paint does a room need? | Time Paints

To calculate how much paint a room needs, measure the total wall area — multiply the width of each wall by the ceiling height and add the results together. Subtract roughly 2 square metres for each standard door and 1.5 square metres for each window to get the paintable surface area. Each Time Paints product lists its coverage rate on the product page, typically expressed in square metres per litre. Divide your total area by this figure to get the litres required for one coat. Most rooms benefit from two coats, particularly when painting over dark colours or bare plaster, so multiply by two. As a general reference, standard interior paints cover 10–14 square metres per litre. A typical bedroom of 30 square metres of wall area will need approximately 4–6 litres for two coats, depending on the product chosen.

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## Related Products

- [Time Flat Timeal](https://www.timepaints.com/en/product/time-flat-timeal)
- [Time Timeal](https://www.timepaints.com/en/product/time-timeal)
- [Time Nova](https://www.timepaints.com/en/product/time-nova)

## Paint Calculator

Use the interactive paint calculator on the Time Nova product page to estimate paint quantity by entering your room dimensions. Coverage rate (13.5 m²/L) is based on Time Nova product performance.

[Open the interactive paint calculator](https://www.timepaints.com/en/product/time-nova)

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