All Calculators - Simple Calc

Health · Health & fitness calculators

Health calculators for BMI, ideal weight, basal metabolism and calorie needs. Region-aware: pick China or WHO BMI standard, metric or imperial units.

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Free BMI calculator: enter height and weight to get your BMI and classify as underweight,

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Free ideal weight calculator: enter height and pick your region (China / WHO Asia-Pacific

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BMR and TDEE calculator using the Mifflin-St Jeor equation. Enter gender, age, height, wei

Pregnancy due date calculator using Naegele's rule and the Chinese child-height prediction formula. Both work in metric and imperial.

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Free pregnancy due date calculator using Naegele's rule. Enter your last menstrual period

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Predict a child's adult height with the Havlicek formula (parent heights ± 13cm for sex) a

Convert cat and dog years into human-equivalent age. Uses the widely used species-and-size curves.

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Convert cat and dog years into human-equivalent age and see the life stage. Uses the veter

Mortgage prepayment and car-insurance premium calculators. Currency-aware: pick CNY, USD, EUR or GBP for the amount display.

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Mortgage prepayment calculator: compare equal-installment vs equal-principal loans, see ho

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Calculate how your next year's car-insurance premium changes after a claim, using region-s

Age (Western & Chinese), workday counter (China/US/UK/Japan/EU holidays), and date-difference calculator.

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Workday calculator that counts weekdays between two dates and subtracts statutory public h

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Date difference calculator: enter two dates to get the gap in days, weeks + days, and year

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Age calculator: enter a date of birth to get your exact age in years, months, days; distan