01 / THE IMAGE
Screen size & viewing distance
Compare projection screens and TVs against your room width,
ceiling height and seating position. The calculator converts a
screen diagonal and aspect ratio into image width and height,
then checks space for the frame, speakers and floor clearance.
A 120-inch 16:9 image is approximately 2.66 m wide and 1.49 m high,
before adding a frame. A screen that fits the wall may still feel
too large from the front row, so the designer also reports the
viewing angle. For a quick standalone check, try our
screen size and viewing angle calculator.
02 / THE PROJECTION
Projector throw distance calculator
Explore long, short and ultra-short-throw categories alongside
ceiling, wall, shelf and low mounting options. Technical Review
shows the lens-to-image distance, required throw ratio and the
selected category's distance range.
Throw distance equals image width multiplied by throw ratio.
For example, a 2.66 m-wide image at a 1.5:1 ratio needs about
3.99 m between the lens and image plane. Category ranges are
a starting point; the final projector must support the required
ratio, lens offset and screen surface.
03 / THE SOUND
Surround sound & speaker placement
Compare surround and overhead speaker layouts using a chosen main
listening seat. The tool checks placement angles, room clearances
and separation, and explains why a larger layout may be unsuitable.
Multiple subwoofers appear separately from amplified speaker channels.
Inspect left, centre and right speaker clearances around the
image, or the cavity and enclosure-to-screen gaps behind an
acoustically transparent screen. The technical table includes
speaker coordinates and listening distances. Read our
home theatre speaker layout guide
for the wider setup process.
04 / YOUR SEAT
Recliner seating & room layout
Set seats per row, choose your listening position and explore
rear-aligned or manually positioned seating. The planning model
reserves at least six feet of depth per row for reclining and
offers four, four-and-a-half or five-inch rises for later rows.
The 3D view shows those platforms so you can judge the arrangement.
Actual recliner dimensions, sightlines and step access still need
checking for your room. Try a dark cinema finish, turn on the
starlit ceiling and open fullscreen to experience the atmosphere
from your selected seat.