Free smart home tools

Quick answers before you buy or drill. Free, no sign-up, no affiliate links.

Calculator

TV Size & Mounting Height Calculator

The right TV size for your seat, exactly how high to mount it, a neck-comfort check for over-fireplace TVs, and which install your wall needs.

Checker

Will It Work With Home Assistant?

See how Ring, Nest, Hue, Eufy, Kwikset and more connect to Home Assistant, whether they need the internet, and what you need.