Free online calculators and converters, and other free resources for the best decision making, including, among others: scientific calculator, currency converter, unit converter, fertility calendar, freelance calculator and many more.

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We offer you simple, reliable and practical online calculators that help you make better decisions in your daily life. You can use them for free. We have online calculators related to health, taxes, finance, business, real estate or science, among others. We design them professionally, documenting them rigorously, and testing them again and again. Our goal is to be the website you go to whenever you need to do any kind of calculation.
Despite our effort, we can not guarantee calculators are error-free or appropriate to your particular circumstances. Their results lack medical, legal, scientific validity, etc. and can not be considered professional advice, so we recommend that you go to professionals in the field.
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