Room Dimension Calculator - Free Floor Area Calculator
Room Dimension Calculator
Calculate room dimensions, floor area, and material needs. Perfect for classroom planning, home improvement, and interior design projects.
Basic Room Calculator
Room Dimensions
Calculations
🏠 Room Size Guidelines
Residential Rooms
| Room Type | Typical Size |
|---|---|
| Small Bedroom | 10' × 10' |
| Master Bedroom | 14' × 16' |
| Living Room | 16' × 20' |
| Kitchen | 12' × 16' |
Educational Spaces
| Room Type | Size per Student |
|---|---|
| Elementary Class | 35-40 sq ft |
| High School Class | 30-35 sq ft |
| Computer Lab | 40-50 sq ft |
| Library | 25-30 sq ft |
How to use this calculator
🏠 How to Use This Calculator
- Enter room length and width for basic calculations
- Add height for paint and wallpaper estimates
- Use complex room tab for non-rectangular spaces
- Calculate material needs with doors/windows counted
- View visual representation of your room
📐 Room Measurement Tips
Measuring Accurately
- • Measure at multiple points
- • Check if walls are square
- • Include alcoves and closets
- • Note door swing direction
- • Measure to nearest inch
Common Mistakes
- • Forgetting baseboards
- • Not accounting for fixtures
- • Ignoring sloped ceilings
- • Missing built-in furniture
- • Wrong unit conversions
🌟 Classroom Planning
Space Requirements:
- • Elementary: 35-40 sq ft per student
- • Secondary: 30-35 sq ft per student
- • Computer lab: 40-50 sq ft per station
- • Art room: 50-70 sq ft per student
- • Include 20% for circulation
Furniture Arrangement:
Leave 3' aisles, 4' teaching space at front, emergency exit access
💡 Material Estimation
- • Always add 10-15% for waste and mistakes
- • Save leftover materials for repairs
- • Check pattern repeats for wallpaper
- • Consider hiring professionals for large rooms
- • Get samples before buying in bulk
⚠️ Important Considerations
- • Check local building codes for room sizes
- • Ensure adequate ventilation (windows/HVAC)
- • Plan for electrical outlet placement
- • Consider natural light and orientation
- • Account for ceiling height in material calculations
About this calculator
Calculate room dimensions, floor area, and perimeter. Perfect for flooring, painting, and furniture planning in classrooms and homes.
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