Projector Screen Size Calculator
Calculate exact projector placement distance and throw ratio for your home theater. Get instant throw distance, minimum wall width, and screen size recommendations for any projector.
Screen Size Calculator
Calculate display dimensions, PPI, and more
Width
87.16in
Height
49.03in
PPI
44
Area
4,273in²
Pixels
8.3MP
Pitch
0.58mm
Throw Distance
130.74 in
≈ 10.9 ft
Min Wall Width
104.59 in
Projector should be placed 130.74 in from the screen
Screen Visualization
Screen = 1.5x person height
Throw Distance
130.74 in
Wall Width
104.59 in
How to Calculate Throw Distance
Enter Screen Size
Input your desired projection screen size (diagonal measurement in inches or cm). The calculator will show the screen width.
Select Throw Ratio
Choose your projector's throw ratio from the dropdown (0.5 for ultra short throw, 1.5 for standard, 2.0+ for long throw).
Get Throw Distance
The calculator instantly shows the exact distance to place your projector from the screen or wall.
Check Wall Width
See minimum wall width required (includes 10% margin) to ensure the projection fits your space.
Projector Throw Ratio Guide
| Projector Type | Throw Ratio | 100" Screen Distance | Best For |
|---|---|---|---|
| Ultra Short Throw | 0.25 - 0.5 | 8" - 20" | Small rooms, living rooms |
| Short Throw | 0.5 - 1.2 | 3' - 8' | Apartments, medium rooms |
| Standard Throw | 1.2 - 2.0 | 8' - 16' | Home theaters, large rooms |
| Long Throw | 2.0 - 5.0+ | 16' - 40'+ | Auditoriums, large venues |
Throw Distance Quick Reference
| Screen Size | Ultra Short (0.4) | Short (0.8) | Standard (1.5) | Long (2.0) |
|---|---|---|---|---|
| 80" (70" wide) | 2.3 ft | 4.7 ft | 8.8 ft | 11.7 ft |
| 100" (87" wide) | 2.9 ft | 5.8 ft | 10.9 ft | 14.5 ft |
| 120" (105" wide) | 3.5 ft | 7.0 ft | 13.1 ft | 17.5 ft |
| 150" (131" wide) | 4.4 ft | 8.7 ft | 16.4 ft | 21.8 ft |
| 200" (174" wide) | 5.8 ft | 11.6 ft | 21.8 ft | 29.0 ft |
Frequently Asked Questions
How do I calculate projector throw distance?
Use the formula: Throw Distance = Screen Width × Throw Ratio
For example, a 100-inch diagonal 16:9 screen (87 inches wide) with a 1.5 throw ratio projector needs:
87 × 1.5 = 130.5 inches (10.9 feet)
What is a good throw ratio for a projector?
Standard throw ratio (1.5-1.8) is most versatile for home theaters:
- Best image quality per dollar
- Widest selection of models
- Good for 12-20 ft rooms
Ultra short throw (0.25-0.5) is best for small rooms. Short throw (0.8-1.2) balances flexibility and price. Long throw (2.0+) is for large venues.
How far should a projector be from a 120 inch screen?
For a 120 inch screen (105 inches wide), placement distance depends on throw ratio:
- • Ultra short throw (0.4): 3.5 feet
- • Short throw (0.8): 7.0 feet
- • Standard (1.5): 13.1 feet
- • Long throw (2.0): 17.5 feet
What's the difference between short throw and ultra short throw projectors?
Ultra short throw (UST) projectors have 0.25-0.5 throw ratio and sit 8-20 inches from screen, ideal for tight spaces. Can sit on TV stand below screen.
Short throw projectors have 0.8-1.2 ratio and need 3-8 feet distance, offering better value than UST with good flexibility. Better for medium-sized rooms.
Related Guides
Understanding Projector Throw Ratios
Complete guide to throw ratios with formulas, projector categories, and room planning tips.
Read Guide →TV Size Calculator
Calculate optimal TV size and viewing distance based on THX and SMPTE standards.
Try Calculator →Monitor Size Calculator
Find the perfect monitor size and resolution for your desk setup and viewing distance.
Try Calculator →Ready to Set Up Your Projector?
Use our calculator above to get instant throw distance and wall width requirements for any screen size and projector type.
Use Calculator Now