Need help, found a bug, or have a calculator you'd like added? Get in touch.
Does VoltKit work offline?
Yes — every calculator runs fully on-device. No signal needed.
What code is it based on?
The U.S. National Electrical Code (NFPA 70). Tables include 310.16 ampacity, Chapter 9 conduit/conductor areas, and 314.16 box fill.
What does VoltKit Pro unlock?
Unlimited saved jobs and PDF / share export. It's a one-time purchase — no subscription. Restore Purchases is in Settings.
I think a number is off.
Email me the exact inputs and expected value and I'll verify against the code. Accuracy is the whole point.
VoltKit is an estimation aid. Always verify results against the current NEC (NFPA 70) and your local AHJ. VoltKit is not a substitute for a licensed electrician's judgment.