DIY & Trades Tools

Free, private DIY & trades calculators for building and home-improvement jobs — insulation R-value, electrical conduit fill, woodworking, and concrete mixes — right in your browser. No upload, no account, no sign-up. More trade tools will land here as they ship.

2 tools available

Compressed Insulation Calculator

Effective R-value of batt insulation squeezed into a cavity

How Compressed Insulation Calculator works?

Conduit Fill Calculator

Conduit fill % calculator — EMT, PVC, Cat6, THHN

How Conduit Fill Calculator works?

Every tool runs in your browser — no upload, no account, free.