Home Theater & AV Setup Calculators
Compare TV and projector sizes, viewing distances, speaker positions and room-acoustic calculations before you buy or install equipment. Results include the relevant dimensions, angles, assumptions and scaled diagrams where they help.
UPS Runtime
Estimate runtime from total battery-pack capacity and measured rack load, while checking both UPS watt and VA ratings.
Seating Sightlines
Estimate the row heights needed for each sightline to clear an assumed head height in the row ahead.
Outdoor Cinema Screen
Compare near and far audience viewing angles with screen dimensions, size bounds and ideal dark-screen brightness.
Golf Sim Screen
Fit an aspect-correct impact-screen image inside clear room dimensions and calculate the projector lens throw range.
Anamorphic Screen
Plan constant-image-height scope geometry, same-height 16:9 size, side masks and anamorphic stretch.
TV vs Projector
Compare how image size, ambient light, daily use, budget and installation affect the choice without assigning an artificial winner.
Ultrawide Equivalent
Compare an ultrawide with 16:9 screens at the same physical height or width and with a bezel-free dual-screen split.
Monitor Distance
Combine a maximum horizontal field of view with minimum pixels per degree to find a practical desk distance.
PPD / PPI
Compare physical pixel density with angular pixels per degree for any resolution, diagonal and viewing distance.
Speaker Cable Gauge
Compare copper AWG loop resistance and signal loss, then select the thinnest gauge within a chosen limit.
Amplifier Power / SPL
Estimate listening-position SPL and reverse-calculate watts per speaker for a target plus headroom.
Panel Area
Compare panel face area and estimated absorption with room surface area using an explicitly entered reference target.
Reflection Points
Locate symmetric side-wall first reflection points with the mirror-source method and real room coordinates.
Atmos Layout
Calculate two- or four-speaker overhead coordinates from ceiling height, ear height and elevation angle.
Surround Speaker Angles
Plot symmetric 5.1 or 7.1 speaker positions from reference listening angles and an editable radius.
Subwoofer Placement
Plot practical boundary, centre and quarter-room subwoofer test positions around the listening seat.
Speaker Placement
Lay out a centred stereo triangle from room dimensions, speaker offset and listening position.
RT60 Calculator
Estimate Sabine reverberation time and the total absorption needed for an editable decay target.
Room Mode Calculator
Enumerate axial, tangential and oblique room resonances and inspect close low-frequency clusters.
Screen Gain
Calculate the screen gain or delivered lumens needed for a brightness target, then compare common gain values.
Projector Brightness
Estimate foot-lamberts from delivered lumens, screen size and gain, or reverse-calculate required output.
Projector Screen Size
Find the largest image that fits your lens distance, throw ratio and usable wall height.
Projector Throw Distance
Solve lens-to-screen distance, throw ratio or screen diagonal with a scaled optical diagram.
TV Size Comparison
Compare two TV sizes by physical dimensions, visible area and viewing angle from the same seat.
4K/8K Distance
Compare 1080p, 4K and 8K angular pixel density at your actual screen size and seat.
TV Mount Height
Calculate screen centre, top, bottom and VESA reference height from your actual seated sight line.
TV Dimensions
Convert advertised diagonal and aspect ratio into visible width, height, area and estimated bezel size.
Aspect Ratio
Simplify a width-to-height ratio and calculate matching dimensions without stretching.
TV Viewing Distance
Compare your current seat position with editable viewing-angle distances for any TV size.
TV Size Calculator
Find a TV diagonal from viewing distance and angle, then compare three screen sizes in a to-scale room view.