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HubCalc
Fast, clean, and free online productivity calculators
Free, privacy-focuHubCalc is a lightweight suite of fast, privacy-focused online calculators built for everyday productivity. Featuring zero ads, instant real-time calculations, dark mode, and a distraction-free experience. Includes tools for hourly wage analysis, invoice VAT calculation, CPM ad budget planning, percentage changes, and more.sed online calculators for freelancers, business invoicing, and daily math productivity.
Hi Product Hunt community! 👋 I'm the maker of HubCalc.
I built this lightweight tool suite because I was frustrated with existing online calculators — most of them are slow, overloaded with intrusive ad banners, and require account sign-ups just to do simple math.
HubCalc is 100% free, privacy-focused, and lightning-fast. It features zero ads, instant real-time calculations, dark mode, and a responsive design that works great on desktop and mobile.
Currently included:
Hourly Wage & Salary Calculator
Invoice Tax & Total Calculator
CPM Ad Budget Calculator
Percentage Change Calculator
I’d love to get your feedback, suggestions, or ideas on what calculators I should add next!
No comment highlights available yet. Please check back later!
About HubCalc on Product Hunt
“Fast, clean, and free online productivity calculators”
HubCalc was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #78 on the daily leaderboard. Free, privacy-focuHubCalc is a lightweight suite of fast, privacy-focused online calculators built for everyday productivity. Featuring zero ads, instant real-time calculations, dark mode, and a distraction-free experience. Includes tools for hourly wage analysis, invoice VAT calculation, CPM ad budget planning, percentage changes, and more.sed online calculators for freelancers, business invoicing, and daily math productivity.
HubCalc was featured in Productivity (660.2k followers), Fintech (47.5k followers) and Developer Tools (519k followers) on Product Hunt. Together, these topics include over 261.3k products, making this a competitive space to launch in.
Who hunted HubCalc?
HubCalc was hunted by freefly-cn. 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 HubCalc stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.