Calculate Throw Distance

Select your projector model or enter custom throw ratio to calculate optimal placement.

Calculate Distance & Screen Size

How to Use This Calculator

Follow these simple steps to find the perfect projector placement for your space.

📐 Understanding Throw Ratio

Throw ratio determines how far a projector needs to be from the screen to produce a specific image size.

• Ultra Short Throw (UST): 0.1 – 0.3:1 — Place very close to screen (inches away)
• Short Throw: 0.4 – 1.0:1 — Ideal for small to medium rooms
• Standard Throw: 1.1 – 2.0:1 — Most common, suitable for living rooms
• Long Throw: 2.0+:1 — Requires significant distance, best for large venues

📏 How to Measure

• Measure from the lens of the projector to the screen surface
• Screen size is always measured diagonally (corner to corner)
• Ensure measurements are in a straight line (not following ceiling/floor)
• For ceiling-mounted projectors, measure the horizontal distance

🔍 Optical Zoom Explained

Some projectors (like XGIMI HORIZON series) feature optical zoom, which allows you to:

• Adjust screen size without moving the projector
• Fine-tune placement within a distance range
• Maintain image quality (unlike digital zoom)

⚠️ Important Considerations

• Room Lighting: Darker rooms allow better image quality at larger sizes
• Screen Material: Dedicated projection screens improve brightness and contrast
• Keystone Correction: Can adjust image angle, but reduces quality — better to mount properly
• Ceiling Height: Ensure adequate clearance for ceiling mounts
• Cable Management: Plan for power and HDMI cable routing

💡 Pro Tips

• Add 10-15% buffer to calculated distance for installation flexibility
• Test projection before permanent mounting using temporary placement
• Consider viewing distance: 1.5-2.5× screen width is optimal for 4K content
• UST projectors work best with ambient light rejecting (ALR) screens

💬 Need help? Contact our team at iT Hub India for personalized installation advice.