UniversalCalc
Free calculators for money, health and everyday math
What is UniversalCalc?
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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