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CalculatorFlux
166 free calculators. No ads. No signup. Ever.
163 free, accurate online calculators for payroll, finance, health, GPA, construction, and more. All 50 US states covered. No sign-up. Updated for 2025-26.
I built CalculatorFlux because every calculator site I used was either buried in ads, locked behind a signup, or just gave wrong results.
The idea was simple: build every calculator from scratch, verify the formulas against official sources (IRS, ADA, WHO), and make them all free with no strings attached.
Started with payroll calculators for all 50 US states, then expanded into finance, health, construction, math, and food. 166 tools later, every single one runs in your browser. Your numbers never touch a server.
No ads. No accounts. No paywalls. Just accurate tools that work.
Would love to hear which calculator you find most useful, and if there is one missing that you need, let me know in the comments.
About CalculatorFlux on Product Hunt
“166 free calculators. No ads. No signup. Ever.”
CalculatorFlux was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #94 on the daily leaderboard. 163 free, accurate online calculators for payroll, finance, health, GPA, construction, and more. All 50 US states covered. No sign-up. Updated for 2025-26.
On the analytics side, CalculatorFlux competes within Health & Fitness, Productivity and Education — topics that collectively have 815k followers on Product Hunt. The dashboard above tracks how CalculatorFlux performed against the three products that launched closest to it on the same day.
Who hunted CalculatorFlux?
CalculatorFlux was hunted by Calculator Flux. 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.
For a complete overview of CalculatorFlux including community comment highlights and product details, visit the product overview.
Calculator Flux