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VoltWirer
Five essential calculators built for licensed electricians
Hey Product Hunt 👋
I'm Jonathan, and I built VoltWirer after getting tired of bouncing between five different clunky calculator sites every time I needed to check a wire size or voltage drop on a job.
VoltWirer puts the five calculators electricians actually use every day in one clean, fast tool:
Voltage drop
Wire ampacity
Conduit fill
Box fill
Conduit bending
Everything's built on NEC 2026 standards, so the numbers you get are code-compliant, not just "close enough." No sign-up walls, no clutter, no ads slowing you down on a job site with spotty signal — just punch in your numbers and get your answer in seconds.
I built this as a solo project because I wanted something I'd actually want to use myself — and if you're in the trade, I think you will too.
Would love to hear what you think, and if there's a sixth calculator you wish existed, tell me — I'm actively building this out based on what electricians actually need.
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About VoltWirer on Product Hunt
“Five essential calculators built for licensed electricians”
VoltWirer was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #160 on the daily leaderboard. Professional electrical calculators for voltage drop, wire ampacity, conduit fill, box fill, and conduit bending. Based on NEC 2026.
VoltWirer was featured in SaaS (43k followers), Developer Tools (515.4k followers) and Construction (1.4k followers) on Product Hunt. Together, these topics include over 125k products, making this a competitive space to launch in.
Who hunted VoltWirer?
VoltWirer was hunted by Jonathan Jones. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Jonathan Jones