Free Online Square Footage Calculator
Measure rooms and total up the square footage
Total Area
300 sq ft
| Room | Area |
|---|---|
| Living Room | 180 sq ft |
| Bedroom | 120 sq ft |
Try these next
Why use Square Footage Calculator
- Multi-room support: add every room in a house and get a running total without separate calculations.
- Cost-per-square-foot field converts the measurement into a material or renovation budget in one step.
- Feet/meters toggle handles international listings or metric floor plans without manual conversion.
- Named rooms create a printable reference sheet you can hand to a contractor.
- Live recalculation means you can experiment with room dimensions and see the total shift in real time.
- No account needed -- quick enough for a hardware store aisle decision.
How it works
Area for each room is the rectangle formula: length times width. Measurements in meters produce square meters; in feet, square feet. Total square footage is the sum of all rooms. Cost is total area times the unit price you enter. The conversion factor between square feet and square meters is 0.0929. Values are rounded to two decimal places and recalculated live as you type or add rooms.
About this tool
Planning a flooring project or listing a property? Add rooms with length and width measurements and get per-room area plus a running total. Name each room -- kitchen, master bedroom, garage -- so the breakdown doubles as a reference sheet for contractors. An optional cost-per-square-foot field turns the measurement into a budget estimate (e.g., $4.50/sq ft for laminate, $0.35/sq ft for a coat of paint). Toggle between feet and meters with one click. The math is length times width per room, summed across all entries. One gallon of paint typically covers 350-400 square feet, so knowing the exact area prevents both over-ordering and mid-project hardware store runs.
How to use Square Footage Calculator
- Name and measure a room. Type the room name (e.g., 'Kitchen'), then enter length and width.
- Add more rooms. Click the add button to enter additional spaces. The total updates live.
- Toggle units if needed. Switch between feet and meters to match your tape measure or floor plan.
- Enter cost per sq ft (optional). Add a material cost to convert the area total into a budget estimate.
Use cases
- Measuring every room before ordering hardwood flooring -- get the total plus 10% for waste and cuts.
- Real estate agent verifying total livable square footage against the appraiser's number before publishing the listing.
- Painter calculating floor and wall area across four rooms to figure out how many gallons of paint to buy.
- Comparing two apartment listings by entering room dimensions to see which unit actually has more usable space.
- Renovation contractor entering measurements and a cost-per-square-foot rate to give a client a same-day estimate.
Frequently Asked Questions
Multiply the length by the width of the space in feet. For example, a room 12 feet long and 10 feet wide is 12 × 10 = 120 square feet. For irregularly shaped rooms, break them into rectangles, calculate each, and add them up.
Multiply square feet by 0.0929. For example, 200 sq ft × 0.0929 = 18.58 square meters. To convert back, multiply square meters by 10.764.
Average bedroom: 120–200 sq ft. Master bedroom: 200–350 sq ft. Living room: 200–400 sq ft. Kitchen: 100–200 sq ft. Bathroom: 40–100 sq ft. These vary widely by home size and style.
Calculate total square footage of all rooms, then add 10% for waste and cuts. For example, if your rooms total 500 sq ft, order 550 sq ft of flooring material.
Multiply total square footage by cost per square foot. For example: 200 sq ft × $5/sq ft = $1,000. This calculator includes an optional cost field to do this automatically.
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