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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.
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.
OddNends Dev was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #153 on the daily leaderboard. 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.
OddNends Dev was featured in Web App (124.5k followers), Developer Tools (522.9k followers) and DIY (1.1k followers) on Product Hunt. Together, these topics include over 132.5k products, making this a competitive space to launch in.
Who hunted OddNends Dev?
OddNends Dev was hunted by Jason. 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.
Want to see how OddNends Dev stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Jason
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.