Free Square Footage & Area Calculators
Calculate room area, paint needed, tile counts, carpet, flooring costs, and more. Simple, fast, and free.
Definitive Answer — Square Foot Conversions
1 ft² = 0.092903 m² = 0.111111 yd² = 0.0000229568 acre = 0.0000092903 hectare. To calculate square footage, multiply length (ft) × width (ft). For L-shaped or irregular rooms, divide the space into rectangles, calculate each area, and sum them.
Example: 12 ft × 10 ft = 120 sq ft • Try the Calculator
ft² Conversion Table
| Square Feet | Square Meters (m²) | Square Yards (yd²) | Acres | Hectares (ha) |
|---|---|---|---|---|
| 1 ft² | 0.092903 | 0.111111 | 0.0000229568 | 0.0000092903 |
| 100 ft² | 9.2903 | 11.1111 | 0.00229568 | 0.00092903 |
| 500 ft² | 46.4515 | 55.5556 | 0.0114784 | 0.00464515 |
| 1,000 ft² | 92.9030 | 111.111 | 0.0229568 | 0.00929030 |
| 5,000 ft² | 464.515 | 555.556 | 0.114784 | 0.0464515 |
| 43,560 ft² | 4,046.86 | 4,840 | 1.000 (= 1 acre) | 0.404686 |
Common Room Sizes Reference
| Room Type | Typical Size (ft) | Square Footage | Square Meters |
|---|---|---|---|
| Small Bedroom | 10 × 10 | 100 sq ft | 9.3 m² |
| Standard Bedroom | 12 × 12 | 144 sq ft | 13.4 m² |
| Master Bedroom | 14 × 16 | 224 sq ft | 20.8 m² |
| Living Room | 16 × 20 | 320 sq ft | 29.7 m² |
| Kitchen | 12 × 14 | 168 sq ft | 15.6 m² |
| Bathroom | 8 × 10 | 80 sq ft | 7.4 m² |
| Single Car Garage | 12 × 20 | 240 sq ft | 22.3 m² |
| Two-Car Garage | 20 × 24 | 480 sq ft | 44.6 m² |
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Popular Tools
What Is a Square Footage Calculator?
A square footage calculator is an online tool that computes the area of a space from its dimensions -- typically length and width in feet, meters, or yards. Knowing the exact square footage is essential for virtually every home improvement project: buying the right amount of flooring, estimating paint gallons, sizing HVAC systems, comparing rental prices, and appraising property values. Rather than measuring and multiplying by hand (and risking costly mistakes), a square footage calculator delivers accurate results instantly.
Area calculations go beyond simple rectangles. L-shaped rooms, rooms with bay windows, and irregularly shaped spaces require breaking the area into multiple rectangles, calculating each separately, and summing the results. For circular areas (like round patios), the formula is pi times radius squared. For triangular sections, it is half times base times height. AreaCalc handles all common room shapes and provides unit conversion between square feet, square meters, square yards, and acres so you can work in whichever system your project requires.
AreaCalc provides fifteen free calculators organized into three categories: Room (square footage calculator, room area, sq ft to sq m converter, acres converter, and volume calculator), Paint (paint calculator, wall area, paint cost, ceiling paint, and trim paint), and Flooring (general flooring calculator, tile calculator, carpet calculator, laminate calculator, and hardwood calculator). Every tool accounts for real-world factors like waste percentages for flooring, window and door deductions for paint, and coverage rates per gallon.
Frequently Asked Questions
How do I calculate square footage?
For a rectangular space, multiply length by width in the same unit. A room that is 12 feet long and 10 feet wide has an area of 120 square feet. For L-shaped rooms, divide the space into two rectangles, calculate each area separately, and add them together.
How many gallons of paint do I need for a room?
One gallon of paint covers approximately 350-400 square feet with one coat. Calculate total wall area (perimeter x wall height), subtract windows and doors (about 20 sq ft per window, 21 sq ft per door), then divide by coverage per gallon. Double the result for two coats. A 12x12 room with 8-foot ceilings needs about 2 gallons for two coats.
How much extra flooring should I buy for waste?
Industry standard is 10% extra for most flooring types (hardwood, laminate, vinyl plank). For diagonal or herringbone patterns, add 15%. For tile, add 10-15% depending on the layout complexity and tile size. Smaller tiles and complex patterns generate more waste from cuts. Always round up to the nearest full box or carton.
How do I convert square feet to square meters?
Multiply square feet by 0.0929 to get square meters. Conversely, multiply square meters by 10.764 to get square feet. For example, a 200 sq ft room equals approximately 18.58 square meters. This conversion is important when buying materials listed in metric units or comparing international property sizes.
How many tiles do I need for my floor?
Divide the total floor area by the area of one tile. A 100 sq ft room with 12x12-inch tiles (1 sq ft each) needs 100 tiles. With 12x24-inch tiles (2 sq ft each), you need 50 tiles. Always add 10-15% for cuts, breakage, and future replacements. Check the number of tiles per box to determine how many boxes to purchase.
About AreaCalc
AreaCalc provides free, fast, and accurate area calculators for homeowners, contractors, and DIY enthusiasts. From simple square footage to paint gallons and tile counts, all results are instant with no sign-up required.
Why Use AreaCalc?
- Instant Results: Real-time calculations as you type
- Multiple Units: Feet, meters, yards — your choice
- Waste Included: Automatic waste factors for flooring and tile
- Paint Coverage: Accurate gallon estimates with window/door deductions
- Free: No registration, no fees, no limits