This tool helps you estimate the amount of paint you need to cover your house’s exterior based on the square footage.

## Exterior Paint Calculator

This calculator helps you estimate the total surface area that requires painting for an exterior wall. Simply enter the dimensions of the wall, the number of doors and windows, and the number of coats you plan to apply. The calculator will give you the total square feet that need painting.

### How to Use

- Enter the
**length**of the wall in feet. - Enter the
**width**of the wall in feet. - Enter the
**height**of the wall in feet. - Enter the number of
**doors**on the wall. Each door is assumed to be 20 square feet. - Enter the number of
**windows**on the wall. Each window is assumed to be 15 square feet. - Enter the number of coats of paint you plan to apply.
- Click the
**Calculate**button to see the result.

### How It Works

The calculator first determines the total surface area of the walls based on the provided length, width, and height. It then subtracts the area occupied by the doors and windows. Finally, it calculates the area that needs to be painted, considering the number of coats.

### Limitations

This calculator assumes that all doors and windows are of standard dimensions (20 sq ft for doors and 15 sq ft for windows). For non-rectangular walls or irregular surfaces, the calculator may not provide accurate results. Additionally, variations in paint types and application methods are not considered.

## Use Cases for This Calculator

# Exterior Paint Calculator Square Feet

### Calculate Total Paint Needed for a Single Wall

Enter the length and height of one exterior wall to determine the total square footage needing to be painted. This will help you easily estimate the amount of paint needed for repainting single walls without any wastage.

### Estimate Total Paint Quantity for the Entire House

Input the dimensions of each exterior wall in your house to calculate the total square footage requiring painting. This will give you a clear idea of the overall paint quantity required for painting the entire exterior of your house.

### Determine Paint Amount for Windows and Doors

Specify the dimensions of windows and doors on your exterior walls to subtract their surface areas from the total wall square footage. This will help you accurately estimate the paint quantity needed, excluding areas covered by windows and doors.

### Calculate Paint Needed for Trim and Accents

Measure the length of trim and accents that require painting to calculate the additional paint required for these areas. This will assist you in estimating the total amount of paint needed to cover all exterior surfaces, including detailed elements.

### Adjust for Multiple Coats of Paint

Select the number of coats you intend to apply to ensure accurate paint quantity calculations. By specifying the number of coats, you can adjust the total paint needed based on the desired finish and coverage for your exterior painting project.

### Consider Paint Spillage and Wastage

Factor in a percentage for paint spillage and wastage to avoid running out of paint during your project. Including a buffer for spillage will help you account for any unforeseen paint loss and ensure you have sufficient paint to complete the job.

### Switch Between Metric and Imperial Units

Easily toggle between metric and imperial units for dimensions to calculate paint quantities in your preferred measurement system. This feature ensures flexibility in inputting measurements based on your familiarity with metric or imperial units for accurate results.

### Use Decimal Values for Precise Measurements

Input decimal values for more precise measurements, especially when dealing with partial dimensions of walls or detailed areas. Using decimals will enable you to calculate paint quantities with greater accuracy, ensuring you have the right amount of paint for your project.

### Save and Print Your Paint Calculation Results

Save or print the calculated paint quantities for future reference or sharing with professionals when planning your exterior painting project. This feature allows you to easily access the estimated paint amounts and share them with others involved in the painting process.

### Get Real-Time Updates as You Input Dimensions

Receive real-time updates on the total paint quantity required as you input dimensions, enabling you to instantly see the impact of different measurements on the overall paint calculation. This interactive feature helps you make informed decisions while planning your exterior painting project.