Calculate two-coat paint coverage, then estimate your screen brightness. Adjust any value to update your project plan.
01
Coverage calculator
Flat screens, curved walls and hemispherical domes.
Total surface
Two-coat system
Based on 170 ft² of finished coverage per gallon for the two-coat system. Gallons round up to whole containers. Surface texture, application and waste can affect actual requirements; confirm coverage for the coating you select.
02
Brightness calculator
Estimated foot-lamberts (ft-L) and nits.
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Estimated brightness
Equivalent luminance
ft-L = lumens × usable light × gain ÷ screen area (ft²). 1 ft-L ≈ 3.426 nits. This estimate assumes uniform illumination and does not account for ambient light, viewing angle or projector calibration. Use the gain specified for your chosen coating.
ROOM ENVIRONMENT
Wall & Ceiling Room Finish Lab
Compare wall and ceiling finishes, reflected light and illustrative room acoustics.
ROOM FINISH LAB / 01
See what your room reflects.
Choose walls and ceiling independently. Hover, tap or focus a surface to explore it.
LIGHT REFLECTANCE VALUE / ESTIMATE
85.0%LIGHT REFLECTED0%100%
Walls 85% · Ceiling 85%
0% less reflected light vs. 85% baselineEstimated scale: white 85% · light grey 60% · studio grey 35% · dark grey 15% · black 5%. Room indicator weights walls 70% and ceiling 30%; actual surface areas vary.
ILLUSTRATED ROOM LIGHT BOUNCE100 / 100100
Baseline room · ordinary light surfaces
SURFACE / WALLWall finish
−7dBLESS ROOM SOUND
BASELINE / NORMAL PAINT
ROOM ACOUSTICSNormal paint · reference room
01 / ROOM SOUND REDUCTION0 dBBASELINE / NO COATING
02 / ECHO DECAY · RT601.60s
Untreated example
Example baseline 1.60 s → fully coated 0.40 s
● Untreated● Selected treatment
Projected directly onto a painted wall—no framed screen. Room finishes surround the separate projection coating. Projector output stays fixed; the illustration changes reflected-light washout.
Illustrative comparison. LRV values are illustrative color estimates, not measured product specifications. White uses the midpoint of the supplied 80–90% range; black uses 5%. Intermediate colors are estimated. LRV is separate from the light-bounce illustration and does not determine sound reduction or echo decay. Lighting and sound graphics are illustrative, not live measurements. Paint On Screen supplied performance figures: ceiling −5 dB; walls −7 dB; walls and ceiling −10 dB total. Sound decay can drop from over 1.5 seconds to as low as 0.4 seconds. These are room-dependent outcomes, not a guaranteed result or an additive reduction per surface. Intermediate decay times are illustrative, interpolated from an example 1.60 s baseline to 0.40 s using the 5 / 7 / 10 dB treatment proportions; they are not measured partial-treatment results. Finish color changes the lighting illustration, not the acoustic value.
Illustrative gain modelSeat angles are calculated from your dimensions. Angular gain uses editable assumptions, not measured coating curves.
Screen & seating dimensions
Distances start at the screen plane. Fan rows follow an arc; seat spacing and aisle apply to straight rows. Presets are editable starting points.
Reflection & oblique light
Move projector distance, offset or lens height to change incidence. Angle-reflective and retroreflective modes shift the assumed gain lobe. These are comparison models, not measured coating behavior.
Coating & gain assumptions
Half-gain is the one-sided angle at 50% of peak. Published viewing cones are shown for reference and are not automatically treated as half-gain measurements. Default assumptions: ±45° horizontal / ±30° vertical.
Top view
Choose a seat
≥75% · green65–74% · yellow50–64% · orange35–49% · amber20–34% · red<20% · purplePercent of modeled peak gain. Below 50% is outside the assumed half-gain boundary, not a measured product specification.
Move selected seat / eye position
Side view
Selected seat · screen center
All seat results
Modeled gain at the screen center, by seat
Seat
Distance
Horizontal
Vertical
Est. gain
% peak
How the estimates work
Flat, vertical screens only. Angles are measured from the screen center; eye height includes row risers. The normal-centered mode places peak gain on the screen normal. Angle-reflective mode mirrors the projector direction across the normal; retroreflective mode points back toward the projector. A smooth angular falloff is applied around the chosen lobe axis: gain = peak × 2−[(horizontal / H)² + (vertical / V)²]. H and V are your assumed half-gain angles. Screen-edge gain is sampled at the corners, edge midpoints and center.
This is a planning model, not a measured product gain report. Projector-to-screen incidence and ideal reflection directions are geometric. Reflection-mode falloff is assumed; the model excludes measured ALR directionality, curved screens, obstructions, irradiance nonuniformity and real installation losses. Do not use it to predict UST/ALR performance. Changing screen size changes image angles and edge estimates; center gain depends on the seat angle and assumed curve.
PROJECTOR PLACEMENT / SIMPLE SETUP
Put your projector in the right place.
Pick your projector. Set a screen size. Drag the screen or projector to plan your placement.
Loading projector catalog…
Your viewing position & brightness
Directional mirror reflection follows the projector angle. Diffuse and retroreflective surfaces behave differently; choose the model that matches your coating.
Starts with the selected model’s rated lumens. Enter measured output for a closer estimate. The 16 ft-L starting target assumes a dark room; raise it for your needs.
Height, left / right & viewerLens specifications & gain assumptions
Unknown values remain unconfirmed. Manual entries override this model for your plan.
Shift percentages here use full native image width / height. Combined horizontal and vertical shift needs the manufacturer's placement chart.
Drag the eye icon to choose your seat or standing position. Drag the projector to place it. Side view: drag the screen up or down. Top view: move the screen left or right, or pull its end handles to resize. Arrow keys also work on focused handles.
Placement is a planning estimate. UST and interchangeable lenses need their installation chart and exact lens. Lens shift is not keystone. Gain and viewer colors use a nine-point screen-sampling model with editable reflection behavior and half-gain angles, not measured coating curves; they are not a guarantee of acceptable image quality. Viewer brightness is lumens × modeled gain ÷ screen area in ft². Rated output can overstate calibrated output; the estimate excludes ambient-light contrast and optical losses.
CURVED SURFACE LAB / SINGLE VIEWER
Inside the projection.
Place one simulator viewer and a projector inside a curved screen or dome. Explore local reflection angles and modeled gain across the surface.
Projector → surfaceIdeal mirror raySurface → viewerGain: green → yellow → orange → red → purple
Illustrative optical model, not a measured coating curve or projector lens simulation. The gain axis follows each local surface normal, mirror direction, or projector direction. No inter-reflections, obstructions, edge blending or warping are modeled. Brightness uses a uniform angular beam, distance and incidence losses; actual projector output and coating measurements are required for design approval.
03 / BUILD YOUR ROOM PACKAGE
Measure. Choose. Make it happen.
Start with your room dimensions. Adjust the projected wall area, select your finishes and see your coating quantities and current product total.
Your projection space
Choose a starting size, then enter your actual dimensions.
Enter exact projection areas instead
Use net painted area to account for openings or partial projections. Clear these fields to use room dimensions.
Choose your coatings
Grey FLOOR is a starting selection, not a measured optical match to EDGE. Confirm color, substrate and projection requirements for your installation.
EDGE / WALL CANVAS
FLOOR / PROJECTION UNDERFOOT
Your coating plan
FLOOR AREA
EDGE AREA
Coating subtotal
Current Shopify prices. Shipping and taxes calculated at checkout. No package discount is applied.
Estimates use the published 170 ft² per gallon for each product, rounded separately to selected container sizes. The allowance is added before rounding. Follow current product documents; surface condition and application can change actual requirements. FLOOR does not receive an automatic extra primer recommendation.
YOUR PROJECT. YOUR PRODUCT MATCH.
Your project changes. The lineup follows.
Every product stays in view. As you adjust the calculators and project preferences, the closest matches move to the top.
Ranking uses project purpose, projector type, application and estimated brightness. The target is editable. Estimates use published gain for the selected variant and do not account for ambient light or viewing uniformity. Confirm final suitability with our team for complex installations.
