Calculators
Percentages, money, health and everyday maths.
Percentage Calculator
Free percentage calculator. Find X% of a number, what percent one number is of another, and percentage increase or decrease - with the working shown.
BMI Calculator
Calculate your BMI from height and weight in metric or imperial units. See your category on the standard scale and what the number actually means.
Age Calculator
Work out an exact age from a date of birth: years, months, days, total days lived and a countdown to the next birthday.
Mortgage Calculator
Estimate monthly mortgage repayments from loan amount, interest rate and term. See total interest paid and a year-by-year balance breakdown.
Loan Calculator
Calculate monthly payments, total repayment and total interest for personal loans, car loans and more. Adjust amount, rate and term instantly.
Compound Interest
See how savings or investments grow with compound interest. Set a starting balance, monthly contributions, rate and time - view the growth year by year.
Tip Calculator
Work out the tip and total bill instantly, and split it between any number of people. Common tip percentages one tap away.
VAT Calculator
Add VAT to a net price or remove VAT from a gross price at 20%, 5% or any custom rate. Shows the VAT amount and the calculation used.
Discount Calculator
Find the final price after a discount and exactly how much you save. Handles percentage off, fixed amounts off and stacked discounts.
Salary Converter
Convert between hourly rate, weekly, monthly and annual salary based on your working hours. Enter any one figure and see all the others.
Date Calculator
Count the days, weeks and months between two dates, or add and subtract days from any date. Includes working-days-only mode.
Time Calculator
Add and subtract hours, minutes and seconds, or find the duration between two times. Ideal for timesheets, editing and cooking.
Fraction Calculator
Add, subtract, multiply and divide fractions with the answer shown fully simplified, as a mixed number and as a decimal - with steps.
Calorie Calculator
Estimate your daily calorie needs from age, height, weight and activity level using the Mifflin-St Jeor formula. Targets for maintaining, losing and gaining.
Fuel Cost Calculator
Work out how much a journey costs in fuel from distance, fuel economy and price per litre or gallon. Split the cost between passengers.
Scientific Calculator
Free online scientific calculator with trig, logarithms, powers, roots and parentheses. Full keyboard support and a running history of your calculations.
Time Card Calculator
Add up your weekly work hours from clock-in, clock-out and break times. Calculates regular and overtime hours plus gross pay from your hourly rate.
Body Fat Calculator
Estimate your body fat percentage from tape measurements using the US Navy method, with category ranges for men and women and metric or imperial units.
GPA Calculator
Calculate your GPA from letter grades and credit hours on the standard 4.0 scale, with optional weighting for Honors and AP classes.
Aspect Ratio Calculator
Calculate missing width or height while keeping aspect ratio. Common presets like 16:9, 4:3 and 1:1, plus ratio detection from any dimensions.