Launching today
OddNends Dev
Workshop, Towing & Equipment Engineering Calculators
2 followers
Workshop, Towing & Equipment Engineering Calculators
2 followers
Free, no-login engineering calculators for Mechanics, Fabricators, RVers, and Off-grid builders and DIY. Instant sizing engines for towing, hydraulics, generators, solar pumps, and shop tools.
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Hey Product Hunt! 👋 I’m Jason, the builder behind OddNends Dev.
If you’ve ever tried to calculate winch line pull on an incline, figure out well pump dynamic head, size hydraulic press cylinders, or scan an e-commerce feed without paying a monthly SaaS fee, you know how frustrating web tools can be.
I’m a field mechanic, fabricator, and front-end dev based out in Texas. I got tired of bloated apps requiring logins, monthly subscriptions, and external API calls just to do basic math.
So, I built 50 zero-dependency, lightning-fast engineering utilities that run 100% client-side in your browser. No ads, no sign-ups, no fluff—just pure calculation engines for towing, power systems, shop machinery, and trade maintenance.
A few fan favorites live right now:
Off-Road Recovery Winch & Snatch Block Sizer (Calculates sliding friction vs. incline gravity load and drum torque loss)
Airless Paint Sprayer Tip Sizer (Instantly matches 3-digit spray tip codes like 517 or FFLP310 to your pump GPM)
Well Pressure Tank Drawdown Sizer (Calculates Boyle's Law usable water volume to prevent submersible pump short-cycling)
I built this network solo using vanilla HTML, CSS, and JS. I’d love for you to take them for a spin, test out the math, and let me know what other niche shop or towing tools you want to see next.
Drop your thoughts, feedback, or feature requests below.