Free calculators
Accurate, verified calculators for percentages, shopping discounts, sales tax, loans, investments, tips, age, and BMI. All 8 calculators are free with no signup.
Percentage Calculator
Calculate percentage problems in real time: What is X% of Y, X is what percent of Y, percentage change, and percentage difference.
Discount & Sales Tax Calculator
Compute discounted prices, stacked promotional coupon savings, and sales tax amounts with itemized price breakdowns.
Date Difference & Duration Calculator
Calculate time spans between two dates in exact years, months, weeks, calendar days, working business days, and hours.
Loan & Mortgage Calculator
Calculate mortgage and personal loan payments with fixed annual interest rates and tenure. Displays complete amortization tables.
Compound Interest Calculator
Simulate investment portfolio returns over time with initial principal, recurring monthly deposits, and annual growth rates.
Tip & Bill Split Calculator
Calculate gratuity with tip percentage presets (10%, 15%, 18%, 20%, custom) and split the total evenly among friends.
Age & Milestone Calculator
Calculate chronological age down to days, hours, and minutes from date of birth, plus a countdown to the next birthday milestone.
BMI & Ideal Weight Calculator
Calculate Body Mass Index (BMI) using metric or imperial measurements. Displays WHO classifications and target healthy weight ranges.