TV & Video Calculators
SMPTE- and THX-compliant calculators for home theater, AV, and broadcast pros. Pick a TV by viewing distance, dial in a projector throw, compute pixel density, or align a wall-mount height — every formula sourced from industry-standard recommendations.
All TV & Video Tools
Six tools, every formula from SMPTE / THX / NMFC standards. Quick Conversion strip included on every page.
Projector Throw Calculator
Calculate throw distance and screen size from throw ratio and aspect ratio. Built for home theater installers and AV pros.
Throw = Width × Throw RatioAspect Ratio Calculator
Compute aspect ratios and missing dimensions for 16:9, 4:3, 21:9, 1:1, and custom formats. Perfect for video editors.
H = W × h ÷ wPPI / DPI Calculator
Determine pixel density (PPI) and print DPI from resolution + diagonal. Includes retina-display detection thresholds.
PPI = √(Hpx² + Vpx²) ÷ DiagonalScreen Size Calculator
Convert diagonal to width × height for any TV, monitor, or projector screen at any aspect ratio.
W = Diagonal × w ÷ √(w² + h²)TV Mounting Height
SMPTE-compliant TV mounting height from diagonal + seated eye level. Avoid neck strain on every viewing.
Mount centre = Eye level (seated)TV Size & Viewing Distance
Pick the right TV diagonal for your room. SMPTE 30° / THX 36° viewing-angle compliant with 1080p, 4K, 8K presets.
Diagonal (in) = Distance (ft) × 12 ÷ 1.5Standard Display Resolutions
Pixel dimensions for the most common resolutions used by the tools above.
| Format | Resolution | Aspect | Megapixels |
|---|---|---|---|
| HD 720p | 1280 × 720 | 16:9 | 0.92 |
| Full HD 1080p | 1920 × 1080 | 16:9 | 2.07 |
| QHD / 1440p | 2560 × 1440 | 16:9 | 3.69 |
| 4K UHD | 3840 × 2160 | 16:9 | 8.29 |
| 8K UHD | 7680 × 4320 | 16:9 | 33.18 |
What Cinema & AV Pros Say
“Throw distance calculator is the first link in my install bookmarks. The aspect-ratio dropdown saves me from typing 1.5, 1.78, 2.35 a hundred times a week.”
“Use this on every conference room spec. Determine projector position and screen size before the install crew touches a ladder. Zero callbacks since I started using it.”
“Mounting height tool is gold. Tell the customer the exact bracket-top measurement, drill once, no fiddling. Customers love seeing the math.”
“Aspect ratio + PPI calcs in one place. I size masters for theatrical 21:9, streaming 16:9, and Instagram 1:1 in seconds without opening a spreadsheet.”
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