ThrowFit
Open calculator

Lens distance · image width · throw ratio

Fit the projector to the room before you mount it.

ThrowFit solves ideal projector geometry locally. Enter specifications from the current manual; the result is a planning range, not mounting approval.

Local geometry

Projector fit

No model lookup
Projected image aspect ratio
Known screen
Known room depth

Measure from the lens reference point to the image surface. Body depth, cables, zoom limits, lens shift, offset, focus, brightness, keystone, mounts, and tolerances are outside this geometry.

Calculated geometry

Required projector specification

Required throw ratio≈ 1.3175
Throw ratio≈ 1.3175
Lens distance≈ 3.5 m11.48 ft
Image diagonal120 in304.8 cm
Image width≈ 104.59 in265.66 cm
Image height≈ 58.83 in149.43 cm

r = D ÷ W = 3.5 ÷ 2.66

The aspect-ratio diagonal usually introduces a square root. ThrowFit keeps exact decimal inputs and unit conversions, then marks rounded display values with ≈.

Verify the final range, reference point, focus limits, and mounting clearance in the current manual for the exact projector and lens.