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calculate.at
200+ free calculators. No signup, no clutter.
calculate.at is a free collection of 200+ online calculators — finance, health, math, conversions, construction, science, and date/time. No signup, no ads cluttering results. Every calculator shows the formula and a worked example, not just the answer.
Hey Product Hunt! 👋
I built calculate.at because most calculator sites bury the actual math under ads, popups, and forced signups. This is the opposite: pick a calculator, get your answer, and see exactly how it was calculated — formula and worked example included.
245 calculators across 7 categories: Finance (56), Conversion (43), Health (37), Math (35), Construction (28), Science (28), Date & Time (18). Every one has a short ID (e.g. CA‑0130) so you can search or share by number.
No accounts, no email capture, no premium tier — just fast, static pages that load instantly.
Would love feedback on which calculators to add next!
About calculate.at on Product Hunt
“200+ free calculators. No signup, no clutter.”
calculate.at was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #56 on the daily leaderboard. calculate.at is a free collection of 200+ online calculators — finance, health, math, conversions, construction, science, and date/time. No signup, no ads cluttering results. Every calculator shows the formula and a worked example, not just the answer.
On the analytics side, calculate.at competes within Productivity, Education and Finance — topics that collectively have 741.9k followers on Product Hunt. The dashboard above tracks how calculate.at performed against the three products that launched closest to it on the same day.
Who hunted calculate.at?
calculate.at was hunted by calculate at. 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 calculate.at including community comment highlights and product details, visit the product overview.
calculate at