All calculators
Finance, cooking, health, maths, home and garden, and everyday tools.
Finance calculators
Loan / EMI Calculator
Work out the monthly payment, total interest and total cost of any loan.
Mortgage Calculator
Estimate a mortgage payment including down payment, taxes and insurance.
Compound Interest Calculator
See how an investment grows with regular contributions and compounding.
Simple Interest Calculator
Calculate flat interest on a principal amount over time.
ROI & CAGR Calculator
Measure return on investment and annualised growth rate.
Sales Tax & VAT Calculator
Add or remove tax from any price instantly.
Discount Calculator
Find the sale price and how much you save.
Tip & Bill Split Calculator
Split a restaurant bill fairly, tip included.
Inflation Calculator
See what money today will be worth after inflation.
Salary Calculator
Convert hourly pay into weekly, monthly and yearly income.
Break-Even Calculator
How many units you must sell to cover fixed costs.
Cooking calculators
Recipe Scaler
Rescale any ingredient quantity for a different number of servings.
Cups to Grams Converter
Convert cup measurements to grams and ounces per ingredient.
Oven Temperature Converter
Celsius, Fahrenheit, fan setting and UK gas mark.
Health calculators
BMI Calculator
Body Mass Index from your height and weight, with category.
BMR & Calorie Needs Calculator
Daily calories to maintain, lose or gain weight (Mifflin-St Jeor).
Body Fat Calculator
Estimate body fat percentage using the US Navy method.
Ideal Weight Calculator
Healthy weight targets from the Devine and Hamwi formulas.
Daily Water Intake Calculator
How much water to drink based on weight and exercise.
Calories Burned Calculator
Energy burned during an activity using MET values.
Heart Rate Zone Calculator
Training zones based on your maximum heart rate.
Pregnancy Due Date Calculator
Estimated due date from the first day of your last period.
Maths calculators
Percentage Calculator
Find percentages of numbers and percentage change.
Ratio Calculator
Simplify ratios and solve for the missing value.
GCD & LCM Calculator
Greatest common divisor and least common multiple.
Quadratic Equation Solver
Solve ax² + bx + c = 0 including complex roots.
Circle Calculator
Area, circumference and diameter from a radius.
Right Triangle Calculator
Hypotenuse, area and angles from two sides.
Home & Garden calculators
Paint Calculator
Litres of paint needed for walls, coats included.
Concrete Calculator
Concrete volume and bags for a slab or footing.
Tile Calculator
Number of tiles required including wastage.
Wallpaper Calculator
Rolls needed for a room with standard 10 m rolls.
Electricity Cost Calculator
Running cost of any appliance per day, month and year.
Misc calculators
Age Calculator
Exact age in years, months and days from your birth date.
Date Difference Calculator
Days, weeks and months between two dates.
Work Hours & Pay Calculator
Total hours worked including overtime and pay due.