Smart Calculators for Every Need

Free, accurate calculators for finance, health, and date & time — fast, simple, and mobile-friendly.

Most used calculations

Estimate monthly mortgage payments including principal and interest.

View loan amortization schedule and total interest paid over time.

Calculate Body Mass Index and weight category from height and weight.

Estimate daily calorie needs based on age, weight, and activity.

Calculate exact age in years, months, and days from birth date.

Add or subtract days, weeks, or months from any date.

Mortgage, loan, rent, and investment calculators for smarter financial decisions.

BMI, calories, fitness, and wellness calculators for a healthier lifestyle.

Age, date difference, time zone, and scheduling calculators.