Calculators

Everyday maths: tax, loans, percentages, dates and averages.

Tools

16 tools
Unit converter Length, mass, area, volume, speed, data, time and temperature.
Salary tax calculator Work out banded income tax and insurance from a gross salary.
Loan calculator Monthly payment, total interest and a full repayment table.
Percentage calculator A percentage of a number, a ratio, and percentage change.
Discount calculator The price after a discount, and how much comes off.
VAT calculator Add tax to an amount, or pull it back out of a total.
Split the bill Work out the tip and what each person owes.
Days between dates How many days and weeks lie between two dates.
Add time to a date Add days, months or years to a date.
Age calculator Exact age, days lived, and time until the next birthday.
Count working days How many working days fall between two dates.
Body mass index Your BMI and healthy weight range from height and weight.
GPA calculator Work out a weighted average from grades and credit hours.
Price by area Area times price per unit — for property and materials.
Random number Generate random numbers in any range you choose.
Pick at random Draw a random winner from a list of entries.