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. Select a category below or browse all tools.
Display & Viewing
Calculate the ideal screen size, projector placement, and brightness for your room. These tools help you get the picture right before buying.
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.
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.
Seating & Riser
Calculate riser heights and viewing angles for multi-row seating.
Projector Lumens
Calculate minimum brightness for your screen and ambient light.
Audio & Amplification
Match your amplifier to your speakers, find compatible receivers, plan speaker placement, and calculate the right wire gauge.
Amplifier Power
Calculate how many watts you need for your speakers and room.
Speaker Wire Gauge
Find the right AWG for your cable run length and speaker impedance.
Receiver Matching
Find the right AVR for your speakers, room size, and feature needs.
Stereo Triangle
Calculate exact speaker positions, toe-in angle, and sweet spot width for 2-channel.
Speaker Layout
Visualize and adjust surround sound speaker placement with Dolby angle guidelines.
Room Acoustics
Analyze your room's acoustic properties — standing waves, reverb time, reflection points, and boundary interference — to optimize speaker and subwoofer placement.
Room Modes
Find problem bass frequencies from your room dimensions.
RT60 Calculator
Estimate your room's reverberation time and plan acoustic treatment.
First Reflections
Find where to place acoustic panels for optimal sound staging.
SBIR Calculator
Find bass cancellation frequencies from speaker-boundary interference.
Room Acoustics
Full acoustic analysis: RT60, reflections, SBIR, and overall grade.
System & Infrastructure
Plan your cable runs and electrical requirements. Know what HDMI spec you need and whether your circuit can handle the load.
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.