TheaterCalc
Free, with limitsFree THX/SMPTE/Dolby planning calculators
Free tier & pricing
11 free home-theater calculators including a visual room layout planner; a paid Blueprint guide is upsold.
Last verified Jun 23, 2026. Report a change →
The short answer
A suite of free calculators (screen size, Atmos angles, seating rows, room size) plus a Room Layout Planner.
The facts
- Pricing
- Paid · Free, with limits
- Free tier
- Yes
- Runs in browser
- Yes
- Platforms
- Web
- 2D / 3D
- Basic 3D
- Learning curve
- Moderate
- Export formats
- —
The catch
No major catches — this one’s refreshingly straightforward.
Best for
Standards-based home-theater layout math
TheaterCalc: questions, answered
Is TheaterCalc free?
TheaterCalc has a free tier, but with limits. 11 free home-theater calculators including a visual room layout planner; a paid Blueprint guide is upsold. Paid plans start at Paid.
What platforms does TheaterCalc run on?
TheaterCalc is available on Web. It runs in any web browser with nothing to install.
Does TheaterCalc do 3D and photorealistic renders?
TheaterCalc supports 3D with basic 3d render quality. For fully photorealistic output you may want a heavier tool.
Is TheaterCalc easy to learn?
Moderate to pick up. Standards-based home-theater layout math