Calculators US · UK · Canada · Netherlands
Free online calculators
Mortgage, loan, tax, percentage and everyday calculators that show their formula and working, so you can check every answer. Each one is reviewed by Dr. Muhammad Amjad Khadim, PhD Mathematics.
Money and finance
- Mortgage Calculator Monthly payment, total interest and a yearly schedule. US, UK and Canadian compounding. US · UK · Canada
- Loan Calculator Payments for personal, car and student loans, with total cost and payoff schedule. US · UK · Canada · NL
- Compound Interest Calculator Savings growth with monthly deposits and any compounding frequency. US · UK · Canada · NL
VAT and sales tax
- VAT Calculator Add or remove VAT for the UK, Netherlands (BTW), Germany, France and Belgium. UK · Netherlands · EU
- GST/HST Calculator (Canada) GST, HST, PST and QST for every Canadian province and territory. Canada
- Sales Tax Calculator (US) Add or remove US state and local sales tax from any price. USA
Everyday maths
- Percentage Calculator Percent of a number, percentage change, and increase or decrease by a percent. Worldwide
- Tip Calculator Tip amount, total and an even split between any number of people. US · Canada
- Discount Calculator Sale price after one or two discounts, with optional sales tax. Worldwide
- Height Converter (cm to feet and inches) Convert height between centimeters and feet and inches, with a height chart. US · UK · Canada · NL
- Date Calculator Days between two dates, business days, and adding or subtracting days. Worldwide
Health and fitness
- BMI Calculator Body mass index for adults in kg/cm, lb/ft or stone, with waist-to-height ratio. US · UK · Canada · NL
- Calorie Calculator Daily calories to maintain, lose or gain weight (TDEE, Mifflin-St Jeor). US · UK · Canada · NL
- BMR Calculator Basal metabolic rate by Mifflin-St Jeor, Harris-Benedict and Katch-McArdle. US · UK · Canada · NL
- Body Fat Calculator Body fat percentage with the US Navy tape-measure method. US · UK · Canada · NL
- Ideal Weight Calculator Healthy weight range for your height, plus Devine, Robinson, Miller and Hamwi. US · UK · Canada · NL
- Age Calculator Exact age in years, months and days, and the countdown to your next birthday. Worldwide
- Pregnancy Due Date Calculator Estimated due date, how many weeks pregnant you are and the trimester. US · UK · Canada · NL
School and science
Before you rely on any calculator
Read our guide to using online calculators correctly: why two calculators can disagree, how to add and remove VAT, how Canadian mortgages compound, and the rounding rules accountants use.