Simple Interest Calculator
Work out simple interest on any principal, rate and duration, in twenty currencies. Shows the interest, the total amount and how the figure was reached. Runs entirely in your browser.
Financial calculators
Financial Calculators for Your Country
Tax, employment benefits, savings and interest, worked out with the rules that apply where you are. Every calculation runs inside your browser: nothing you enter is uploaded, stored or logged, and each result shows its working and the source it came from.
7 calculators, every country
The Same Arithmetic Everywhere
Compound Interest Calculator
Calculate compound growth with any compounding frequency and optional regular contributions. Shows the year-by-year breakdown, total invested and interest earned. Runs entirely in your browser.
Loan EMI Calculator
Work out the monthly payment on a home, car or personal loan, and see how much of each year goes on interest rather than the balance. Runs entirely in your browser.
SIP Calculator
Project what a monthly investment plan could grow to, with an optional annual step-up and a one-off amount. Shows what you put in against what the returns added. Runs in your browser.
CAGR Calculator
Work out the compound annual growth rate between any two values over any period. Shows the growth multiple, the total return and how long a doubling would take. Runs in your browser.
FD Calculator
Work out what a fixed deposit matures to, at any rate, term and compounding basis. Shows the effective annual yield and the difference between a cumulative and a payout deposit. Runs in your browser.
RD Calculator
Work out what a recurring deposit matures to, using the quarterly compounding banks actually apply. Shows the interest, the instalment count and a year-by-year breakdown. Runs in your browser.
Everyday and dates
Not Everything Is About Money
Age, percentages, averages and the days between two dates - the calculations that come up in ordinary life. They need no country rules and no currency.
11 countries
Rules That Depend on Where You Are
Income tax, gratuity, end-of-service and redundancy are different calculations in every country, not translations of one another. Each of these uses that country's own rules, versioned by rule year and cited to the authority that published them.
India
United Arab Emirates
Saudi Arabia
Qatar
Oman
Bahrain
United States
Canada
United Kingdom
Australia
New Zealand
Background reading
Guides
Plain explanations of what a calculator cannot answer for you: which option costs less, what a figure actually means, and where the rules surprise people.