Have a question about one of our calculators, spotted an error in a result, or want to suggest a new tool? We’d like to hear from you.
CalculatorPro builds free online calculators for health, fitness, pregnancy, dates and everyday maths. Every calculator is checked against published formulas, and our health pages are medically reviewed. If you think a result or an explanation is wrong, please tell us which page you were on and what you entered. We review every report and correct mistakes quickly.
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We usually reply within 2–3 business days.
Please note: our calculators give general estimates for information only and are not medical advice. For health decisions, please talk to a qualified doctor or healthcare professional.