Square Footage Calculator
Calculate area in square feet and square meters from length and width.
Inputs
Square Footage Calculator
Results update as you type.
Live result
Area square feet
216.00
Area square meters
20.07
Scenario compare
Save scenario A, change a few inputs, then save scenario B.
Scenario A
Not saved yet
Scenario B
Not saved yet
Quick check
Change one or two inputs to compare a second scenario before using the number.
Need more detail?
Formula, examples, and FAQ stay tucked away until you need them.
FXFormula ExplanationThe core logic behind the numbers on this page.+
This calculator uses a simple arithmetic formula to calculate the square footage based on the provided length and width. The formula is transparent and editable, allowing you to adjust the assumptions to fit your specific situation. The calculator also provides a clear result and notes to help you understand the estimate.
USEHow to UseA short path from input to result.+
- Enter the requested inputs.
- Keep any editable rule or rate fields aligned with your situation.
- Review the result and notes before using the estimate.
EXExamplesReference scenarios to sanity-check your inputs.+
Adjust the defaults to match your scenario, then calculate the estimate.
FAQFAQCommon edge cases and quick clarifications.+
How do I use this calculator?
Enter the length and width of the area, and the calculator will display the square footage in both square feet and square meters. You can also adjust the editable fields to fit your specific situation.
Can I trust the results?
This calculator provides an estimate, and it's essential to verify the results against official or current rules when making decisions that involve money, health, or legal implications.
Is this calculator original?
Yes, this calculator uses an original implementation and rewrites the calculator structure, labels, formulas, and copy to provide a unique experience.
Can I change the assumptions?
Yes, the calculator includes editable rate and rule fields that can be adjusted to fit your specific situation or location.
What is the formula used?
The calculator uses a simple arithmetic formula: area = length x width.
RDRelated GuidesSupporting explainers that go deeper than the calculator alone.+
how-to article
Concrete Cost Calculator: How Many Bags or Yards Do You Need?
Estimate concrete quantity and project cost by bags or cubic yards with waste factor examples and a free calculator.
how-to article
Paint Calculator by Room Size: Walls, Ceiling, and Waste Factor
Find out how much paint you need by room size, wall area, coats, and waste factor with a free calculator.
scenario article
Gravel Calculator With Cost Estimate for Driveways and Landscaping
Estimate gravel volume and project cost for driveways, paths, and landscaping with a free calculator and examples.