Square Feet Calculator
Rectangle/Square Room Calculator
Circular Area Calculator
Triangle Area Calculator
How to Calculate Square Feet of a Room
Calculating square feet of a room is essential for flooring, painting, and renovation projects. Our square feet calculator makes it simple to measure any room accurately.
Step-by-Step Guide for Rectangular Rooms:
- Measure the length of the room in feet
- Measure the width of the room in feet
- Multiply length × width to get square feet
- Use our ft to sq ft calculator for instant results
Example: A room that is 12 feet long and 10 feet wide:
12 ft × 10 ft = 120 square feet
How to Calculate Square Feet of a House
Learning how to calculate square feet of a house involves measuring each room separately and adding them together. Here’s the complete process:
House Measurement Steps:
- Measure each room using the square feet calculator
- Include living rooms, bedrooms, kitchens, and bathrooms
- Measure closets and hallways separately
- Don’t include garages, basements, or unfinished areas
- Add all room measurements for total house square footage
House Example:
Living Room: 15×20 = 300 sq ft
Kitchen: 10×12 = 120 sq ft
Bedroom 1: 12×14 = 168 sq ft
Bedroom 2: 10×12 = 120 sq ft
Bathroom: 8×10 = 80 sq ft
Total: 788 square feet
Square Feet Calculation Formulas
Use these formulas with our ft to sq ft calculator for different shapes:
| Shape | Formula | Example |
|---|---|---|
| Rectangle/Square | Length × Width | 10 ft × 8 ft = 80 sq ft |
| Circle | π × Radius² | 3.14 × 5² = 78.5 sq ft |
| Triangle | (Base × Height) ÷ 2 | (10 × 8) ÷ 2 = 40 sq ft |
Common Room Sizes and Square Footage
Reference table for typical room dimensions when learning how to calculate square feet of a room:
| Room Type | Typical Size (ft) | Square Feet |
|---|---|---|
| Small Bedroom | 10 × 10 | 100 sq ft |
| Master Bedroom | 14 × 16 | 224 sq ft |
| Living Room | 16 × 20 | 320 sq ft |
| Kitchen | 10 × 12 | 120 sq ft |
| Bathroom | 5 × 8 | 40 sq ft |
Tips for Accurate Measurements
Get precise results with your square feet calculator by following these tips:
Measurement Best Practices:
- Use a steel measuring tape for accuracy
- Measure at floor level for room dimensions
- Round measurements to the nearest inch
- Double-check measurements before calculating
- Account for irregular shapes by breaking into rectangles
For Irregular Rooms:
- Divide complex shapes into simple rectangles
- Calculate each section separately
- Add all sections together for total square feet
- Subtract areas for built-in fixtures or alcoves
Why Calculate Square Feet?
Understanding how to calculate square feet of a house is important for:
- Flooring Projects: Order correct amount of materials
- Paint Calculations: Determine paint coverage needed
- Real Estate: Verify property listings and valuations
- Interior Design: Plan furniture and layout effectively
- HVAC Sizing: Choose proper heating/cooling systems
- Insurance: Accurate coverage for your property
Frequently Asked Questions
How do I use the square feet calculator?
Simply enter the length and width of your room in feet, then click calculate. Our ft to sq ft calculator will instantly show the area in square feet.
What’s the difference between feet and square feet?
Feet measures length (one dimension), while square feet measures area (length × width). Use our calculator to convert linear feet to square feet.
How accurate is the square feet calculator?
Our calculator provides precise results based on the dimensions you enter. Accuracy depends on how carefully you measure your space.
Can I calculate square feet for irregular shapes?
Yes! Break irregular rooms into rectangles, calculate each section separately, then add them together using our square feet calculator.