These calculations assume 2 coats of paint and do not include the ceiling.
Calculate gallons of paint for room.
If you want to paint doors door frames baseboards and the ceiling the.
Easily calculate how much paint you ll need to complete your next job or project with sherwin williams paint calculator.
Estimates range between 350 to 400 square feet per gallon of paint on smooth interior plaster walls.
Most professionals use the formula of 350 to 400 square feet of wall coverage per gallon of paint and 200 square feet of wall coverage per gallon of primer.
Two gallon cans of paint cover up to 800 square feet which is enough to cover an average size room.
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.
This is the most common amount needed especially when considering second coat coverage.
In this example you would need slightly less than 2 gallons of paint to cover the walls with a single coat.
Calculate the amount of paint you ll need to paint the room.
These calculations are not intended to give more than a rough estimate.
Your paint calculation will update if you change the number of desired coats of paint.
Use the area section below to calculate the walls and ceiling values.
External or internal rooms or exterior walls.
The final step is to find the coverage ratio of your paint and calculate the number of gallons needed to cover the total square footage.
If more than one room is being painted with the same color add up the total square footage.
Three gallon cans of paint cover up to.
The coverage amount is listed on the label of the paint can.
The paint calculator allows you to specifiy windows number and size and number of doors and it supports custom paint efficiency spreading rate.
The estimate divides the total square footage by 350 as one gallon of paint covers 350 square feet.
Precise paint needs will vary according to many factors including application method.