Home Theater Calculators
CinemaConfig offers 18 free calculators designed for home theater enthusiasts. From screen sizing to room acoustics, these tools help you make informed decisions before you buy.
Acoustic
Analyze standing waves, reverb time, reflection points, boundary interference, and wire runs — the acoustic and signal layer of your room.
Room Acoustics
Full acoustic analysis: RT60, reflections, SBIR, and overall grade.
Room Modes
Find problem bass frequencies from your room dimensions.
RT60 Calculator
Estimate your room's reverberation time and plan acoustic treatment.
SBIR Calculator
Find bass cancellation frequencies from speaker-boundary interference.
First Reflections
Find where to place acoustic panels for optimal sound staging.
Speaker Wire Gauge
Find the right AWG for your cable run length and speaker impedance.
Visual
Calculate the ideal screen size, projector placement, brightness, cable spec, and technology comparison for your display setup.
Viewing Distance
Find the ideal screen size for your seating distance and resolution.
Projector Throw Distance
Calculate screen size from your throw distance and lens ratio.
Projector Lumens
Calculate minimum brightness for your screen and ambient light.
TV vs Projector
Compare cost-per-inch, 5-year TCO, and room-type verdict for your setup.
Lamp vs Laser TCO
10-year cost comparison with lamp replacements and brightness degradation.
HDMI Cable Guide
Determine the right cable type for your run length and bandwidth.
Electrical
Match amplifiers to speakers, size circuits and UPS, and find compatible receivers for your system.
Planning
Visualize speaker placement, plan multi-row seating, and dial in the stereo triangle before you mount anything.
Popular Guides
How Far Should You Sit From Your TV?
The math behind screen size, resolution, and seating distance.
Room Acoustics 101: Why Your Room Matters More Than Your Speakers
A treated room on a budget beats expensive speakers in bare drywall.
HDMI Cables: What You Actually Need
Cut through the marketing and buy the right cable for your setup.
How to Match a Receiver to Your Speakers
Impedance, ACD power, and the specs that actually matter.