The Square Footage Calculator helps you quickly find the total area of any space
whether it’s a room, wall, floor, or concrete slab.
Simply enter the width and length in feet, inches, cm, or meters, and get the exact area in square feet (ft²),
plus conversions to m², in², and yd².
💡 Ideal for homeowners, contractors, and flooring installers who need fast, accurate measurements.
How to Calculate Square Footage (Step-by-Step)
Before you start calculating, it’s important to know who this method works best for — because not everyone searching for “square footage” needs the same thing.
- 🏠 Homeowners & Renters: measuring a room, apartment, or the total floor area before buying paint, tiles, or carpet.
- 👷♂️ Contractors & Builders: calculating floor plans, blueprints, and concrete areas for construction estimates.
- 🧮 Students & DIY users: learning how to find area in square feet for projects or quick conversions.
Once you know your purpose, here’s the universal formula that works for all cases:
📐 Formula:
Area (ft²) = Length (ft) × Width (ft)
Example: If a room measures 12 ft × 10 ft, then:
Area = 12 × 10 = 120 ft²
💡 Using inches? Convert to feet first (divide by 12), then multiply:
Area (ft²) = (Length (in) ÷ 12) × (Width (in) ÷ 12)
Example: 120 in × 96 in → (120÷12) × (96÷12) = 10 × 8 = 80 ft².
✅ You can also mix units — e.g. Width in inches and Length in meters.
The calculator converts both to feet automatically and shows results in ft² (with m², in², and yd² equivalents)
⚠️ When not to use this formula: if you’re calculating volume (L × W × H) or converting linear feet, use a dedicated volume or unit-conversion tool — this method is for area only.
✅ Units supported: ft, in, cm, m.
You can also mix units — e.x., Width in inches and Length in meters. The calculator converts both to feet internally, then computes the area and shows results in ft² (with helpful conversions to m², in², and yd²).
🟧 Square Footage Calculator with Feet and Inches
This square footage calculator with feet and inches supports mixed units — you can enter any combination of ft, in, cm, or m, and it will automatically convert both dimensions to feet before calculating.
🧭 Example: Enter Width = 12.5 ft and Length = 10 in — the tool converts both to feet internally before computing the area.
📐 Formula inside the calculator:
Area (ft²) = (Width in ft) × (Length in ft)
🧮 Example Calculation:
Width = 12.5 in → 1.04 ft
Length = 10 in → 0.83 ft
Area = 1.04 × 0.83 = 0.868 ft²
🟪 Room & Home Square Footage Examples
These examples show typical room sizes and their total square footage — useful for home planning, interior design, and renovation estimates.
| Room Type | Dimensions (ft) | Area (ft²) |
|---|---|---|
| Small Bedroom | 10 × 10 | 100 |
| Living Room | 15 × 20 | 300 |
| Kitchen | 12 × 10 | 120 |
| Bathroom | 8 × 6 | 48 |
| Garage | 20 × 20 | 400 |
💬 These examples help you estimate square footage for home planning and remodeling projects.
🟫 Flooring & Concrete Square Footage Chart
This chart helps you estimate square footage and material needs for common home improvement projects — flooring, concrete slabs, patios, and driveways.
| Project Type | Example Dimensions | Area (ft²) | Material Estimate |
|---|---|---|---|
| Flooring | 12 × 15 | 180 | 18 tiles (10 ft² each) |
| Concrete Slab | 20 × 30 | 600 | 22.2 bags (80 lb each) |
| Driveway | 25 × 10 | 250 | 9.3 bags (80 lb each) |
| Patio | 15 × 10 | 150 | 5.6 bags (80 lb each) |
💡 These examples make it easy to estimate materials for flooring, concrete, or paint coverage.
🟥 Wall Area Example (for Paint or Wallpaper)
When planning paint or wallpaper projects, it’s essential to measure wall area precisely. Here’s a practical example:
📏 Example: A wall measures 12 ft (width) × 9 ft (height)
➜ Area = 12 × 9 = 108 ft²
🎨 Paint coverage: 1 gallon ≈ 350 ft²
➜ You’ll need approximately 0.31 gallons (≈⅓ gallon) for one coat.
🟦 Common Conversions
Here’s a quick reference for the most common square footage conversions — ideal when switching between imperial and metric units.
| Unit | 1 ft² Equals | Formula |
|---|---|---|
| in² | 144 in² | ft² × 144 |
| yd² | 0.111 yd² | ft² ÷ 9 |
| m² | 0.092903 m² | ft² × 0.092903 |
| cm² | 929.03 cm² | ft² × 929.03 |
💡 These conversion factors are essential for switching between imperial and metric units in any square footage calculation.
🟩 FAQs – Square Footage Calculator
1. How to calculate square footage of a room?
Multiply the room’s length × width in feet.
2. How to calculate square footage with feet and inches?
Convert inches to feet by dividing by 12, then multiply.
3. How to calculate square footage of a wall?
Width × Height = total area (in ft²).
4. How to calculate square footage of a house?
Add all room areas together (each in ft²).
5. How to calculate square footage for flooring or concrete?
Width × Length (in ft) = total area; use for tile or cement estimation.
6. Is the square footage calculator free?
Yes — it’s 100% free and mobile-friendly on PixelsCalculator.
🟩 Conclusion
The Square Footage Calculator is designed for homeowners, contractors, students, and DIY users who need quick, accurate area results.
Whether you’re measuring rooms, walls, floors, or concrete slabs, this tool simplifies every calculation in seconds.
Simply enter your dimensions and get instant, precise conversions in square feet (ft²), square meters (m²), square yards (yd²), or square inches (in²) — all within one clean interface.
💡 Tip: This calculator works perfectly for both residential and commercial projects — from estimating paint or flooring to planning real estate layouts.
🔗 Learn more about measurement units:
Wikipedia – Square Foot
🟧 Related Tools
Explore more free tools that make area and dimension conversions even easier — all available on PixelsCalculator:
- Square Feet to Square Inches Converter
- Square Feet to Square Meters Converter
- Square Meters to Square Feet Converter
- Rectangle Area Calculator
- Circle Area Calculator
💡 For all-in-one conversions between square feet, meters, yards, and inches, visit the
main Area Tools page.