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Flash calculator
40+ lightning-fast utility tools right in your browser.
Hello there Product Hunt community! 👋
I am the creator of the Flash Calculator, a tool born out of frustration with slow, bulky, and unnecessarily complicated utility sites.
Flash Calculator is an aggregation of over 40+ standalone, 100% client-side rendered calculations made to be fast (sub-millisecond rendering, because why not?), private, and light on the wallet/hardware in your pocket.
From complex financial calculations to simple daily unit conversions I have tried to make the tools intuitive for a quick calculation without bloat or fluff.
Would love to hear your thoughts and feedback, as well as possible feature suggestions for tools to be added in the future! Thank you for the support! 🚀
honestly the financial calculator is way faster than what i was using before, and having everything in one place without ads is honestly kind of a relief. bookmarked it already
honestly looks pretty useful, the range of categories is solid. one thing i'd love is a history section where i can see my recent calculations, especially for stuff like tips or mortgage stuff where i run the same numbers multiple times. would be a nice quality of life add.
love how everything loads instantly, no ads popping up between calcs. the unit converter section is way more thorough than i expected.
Love how snappy the mortgage calculator is compared to the usual sites I bounce between, and having the unit conversions right there in the same tab saves me from opening a second window.
The clean category organization across Math, Financial, and Health sections makes it feel less overwhelming than other calculator apps I have tried.
Love how the categories are organized at the top instead of buried in a menu, makes jumping between a tip calculator and unit conversion feel instant. Clean little touch that goes a long way.
Would love to see a history tab that saves recent calculations with timestamps, super helpful when you need to reference a mortgage or unit conversion you did earlier.
would love to see a customizable home screen where i can pin my most used calculators to the top instead of digging through categories every time
honestly this looks really handy, especially since it covers so many categories in one place. one thing i'd love is a history or favorites tab so i can quickly get back to the conversions i use all the time without having to set them up again.
About Flash calculator on Product Hunt
“40+ lightning-fast utility tools right in your browser.”
Flash calculator was submitted on Product Hunt and earned 14 upvotes and 10 comments, placing #99 on the daily leaderboard. The ultimate free collection of calculators and conversion tools. Math, Financial, Health, and more.
Flash calculator was featured in Web App (122.9k followers), Productivity (656.6k followers) and Developer Tools (516.2k followers) on Product Hunt. Together, these topics include over 260.4k products, making this a competitive space to launch in.
Who hunted Flash calculator ?
Flash calculator was hunted by Reja /na. 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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Reja /na