Enter room dimensions or total area to calculate square footage, convert between units, and estimate material costs.
Room measurements
Area result
Cost of materials
Enter a unit price or total cost to estimate flooring, tile, or other material expenses.
Formula
How to Calculate
Examples
About this calculator
The Square Footage Calculator finds area from length and width, supports multiple identical spaces, converts between imperial and metric units, and estimates material costs from price per square foot or total budget.
Dimensions or direct area
Calculate from length × width × quantity, or enter a known area in sq ft, m², sq in, sq yd, or acres.
Instant unit conversions
See results in square feet and square meters at the same time—handy for real estate, flooring, and international projects.
Material cost estimates
Enter a unit price or total cost to estimate flooring, tile, carpet, or other products sold by the square foot.
- Room & floor planning
- Real estate comparisons
- Flooring & tile quotes
- Land area checks
Frequently asked questions
Quick answers about this calculator—how it works, accuracy, and everyday use.
For a rectangle, multiply length × width. If you have multiple identical rooms or areas, multiply by quantity. This calculator also converts between square feet, square meters, square inches, square yards, and acres.
Multiply square meters by about 10.764 to get square feet. For example, 100 m² ≈ 1,076 sq ft. This tool shows both units automatically whenever you enter dimensions or total area.
Divide the total property or material cost by the total square footage to get price per sq ft—or enter a unit price here to estimate total cost. This helps compare homes, flooring, tile, and other materials sold by area.
Yes. Switch to the Area tab, enter your known area, and choose the unit (sq ft, m², sq in, sq yd, or acres). Conversions and cost estimates update instantly.