Launching today

UniversalCalc

Launching today

Free calculators for money, health and everyday math

1 follower

Free calculators for money, health and everyday math

1 follower

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24 free online calculators in English and Spanish: take-home pay and self-employment tax, loans, mortgage, compound interest, BMI, calories, ovulation, running pace, days between dates and more. No sign-up and nothing to install. Every calculator shows the formula and the official figures behind the result, with worked examples, and any calculation can be shared as a link.

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Launch tags:Health & Fitness•Productivity•Personal Finance

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Customer.ioAutomate Messaging Everywhere — Startups Get 12 Months Free

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Maker

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Hi Product Hunt! I built UniversalCalc because most calculator sites bury the answer under pop-ups, sign-up walls and numbers you can't check. So every calculator here works the same way: you type your numbers, you get the result instantly, and right below it you see the formula and the data it uses, like the 2026 IRS tax brackets for the paycheck calculator. No account, no app, and you can share any calculation as a link. It started in Spanish and now has 21 calculators in English too. I'd love to know which calculator you'd like to see next, and if you spot a number that looks wrong, please tell me!

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15h ago