## How do I calculate how much paint I need for a given surface?

## How do I calculate how much paint I need for a given surface?

Table of Contents

Multiply length x width to get the square footage of trim to be painted. Divide the total by 400 to get the number of gallons of paint you’ll need for one coat.

**How do I calculate paint coverage for a room?**

First off, you need to grab a tape measure to work out the height and width of the surface you want to paint. Then, multiply the height and width together to get your square metre measurement. Subtract any windows and doors by using the same calculation method and deducting it from the total.

### How many gallons of paint do I need for a 2500 square foot house?

As per general guidelines, for painting of house of a 2500 square foot area, generally you will need approximately 18 to 20 gallons or 68 to 75 litres of interior paint and 4 gallons paint for interior trim for about two coat.

**How many sq ft does a gallon of paint cover?**

350 to 400 square feet

The coverage amount is listed on the label of the paint can. Use this to adjust the values in the Paint Coverage section below. Paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon). Use the Area section below to calculate the walls and ceiling values.

## How much paint do I need to cover 40 square meters?

As a general rule, 1 litre of paint will cover between 6 and 6.5 metres squared of wall. So, to calculate how many litres of paint you will need, divide the total paintable surface area by 6.5.

**How much does it cost to paint a 10 by 12 room?**

On average, homeowners spend $300-420 or $2.5-3.5 per square foot to paint a 10×12 room. This does NOT include ceilings, baseboards, trim, or wall repair.

### How much paint do I need for a 1700 sq ft house?

As per general guidelines, for painting of house of a 1700 square foot area, generally you will need approximately 9 to 10 gallons or 34 to 38 litres of exterior paint and 2 gallons paint for exterior trim for about two coat.

**How much paint do I need for a 2000 square foot house?**

So, for 2000 square feet, you will likely need 5 gallons of interior house paint. For the top rated interior house paint, you can expect to pay anywhere between $50 – $80 per gallon.