Choose what to solve
Distance, image size, or required ratio.
Diagonal · width · throw ratio
See whether the projector geometry fits the room.
ThrowFit solves distance, image size, or required throw ratio with exact unit conversion, an explicit ratio range, and no model database.
Dimensions and results stay in this browser. Verify the exact projector and lens manual before mounting.
Three transparent steps
Choose the unknown, enter the manual, inspect the range
Enter real specifications
Use the current model and lens manual.
Keep installation limits visible
Check focus, body, cables, mounting, and safety separately.
One bounded geometry tool
Useful before buying a screen or fixing a mount
- Find a lens-distance range for a chosen diagonal.
- Estimate the screen-size range at one available distance.
- Derive the throw ratio required by a room plan.
- Compare geometry with the exact manual before mounting.
Check the room geometry
Calculate from the projector’s real throw-ratio range
Enter screen geometry and the values from the current manual. ThrowFit calculates locally and keeps focus, brightness, mounting, and safety outside the numeric result.