Free CalculatorWiser tool

Paint Calculator

Estimate gallons of paint from wall area, coats and coverage.

How to use the Paint Calculator

Estimate gallons of paint from wall area, coats and coverage.

Step-by-step instructions

  1. Enter or select Paintable area (sq ft).
  2. Enter or select Number of coats.
  3. Enter or select Coverage per gallon (sq ft).
  4. Tap Calculate.
  5. Review the result shown directly below the calculator.

What the inputs mean

Paintable area (sq ft)
Enter the value requested by this field label.
Number of coats
Enter the value requested by this field label.
Coverage per gallon (sq ft)
Enter the value requested by this field label.

Formula or calculation method

The calculator applies the standard mathematical relationship for the labeled inputs and returns the computed result automatically.

Example

Try entering realistic values for Paintable area (sq ft) and Number of coats, then tap Calculate to see how the result changes.

How to understand the result

Use the result as an estimate based on the values you entered. For planning decisions, double-check that the input units and assumptions match your real situation.

Tip: Keep all values in compatible units and use values from the same time period when the calculator compares two amounts.