Calculators
From BMI to mortgage to percentages — calculators built for clarity, speed and trustworthy results.
BMI Calculator
Body Mass Index calculator with metric & imperial units.
Percentage Calculator
Calculate X% of Y, and X as a percentage of Y.
Age Calculator
Calculate exact age in years, months and days.
Loan / EMI Calculator
Monthly EMI, total interest and total payable for any loan.
Tip Calculator
Split a bill with tip across any number of people.
Discount Calculator
Final price after % discount and total savings.
GST / VAT Calculator
Add or remove GST / VAT from any amount.
Compound Interest Calculator
Future value with custom compounding frequency.
Simple Interest Calculator
Interest = P × R × T / 100.
Date Difference
Days, weeks, months between two dates.
Time Difference
Hours and minutes between two times.
Mortgage Calculator
Monthly mortgage payment, interest and total.
Savings Goal Calculator
Monthly savings needed to hit any goal.
Salary to Hourly
Convert annual salary into hourly, weekly, monthly.
Fuel Cost Calculator
Trip fuel and total cost from mileage.
Ratio Calculator
Simplify and scale any ratio A : B.
PayPal Fee Calculator
Net amount after PayPal fees.
Calorie Calculator
Daily calorie needs (BMR & TDEE).
Body Fat Calculator
Body-fat estimate via US Navy method.
Percentage Change Calculator
% increase or decrease between two values.
Sales Tax Calculator
Tax and total from net price.
Pregnancy Due Date Calculator
Estimated due date from LMP.
Paint Calculator
Litres of paint needed for a room.
GPA Calculator
Weighted GPA on the 4.0 scale.
Water Intake Calculator
Daily water needs by weight and activity.
Dog Age Calculator
Human-equivalent age for your dog.
Electricity Bill Calculator
Daily, monthly and yearly running cost.