Choose a calculator
For everyday spending, use the tip calculator to tip and split a bill, and the discount calculator to find a sale price, a discount percent or an original price. For interest, the simple interest calculator gives interest on a fixed principal, and the compound interest calculator shows growth with monthly deposits.
For borrowing and saving, the loan payment calculator gives the monthly payment and the effect of extra payments, and the savings goal calculator gives the deposit or time needed to reach a target.
- Tip Calculator – Tip, Total and Split the Bill – Tip, total and cost per person, with rounding and a quick percent table.
- Discount Calculator – Sale Price, Percent Off and Savings – Sale price and savings from a percent off, discount % and original price.
- Simple Interest Calculator – Interest and Total Amount – Interest and total from principal, rate and time, in years, months or days.
- Compound Interest Calculator – With Monthly Deposits – Ending balance with monthly deposits, any compounding, and the effective annual rate.
- Loan Payment Calculator – Monthly Payment, Interest and Payoff – Monthly payment, total interest and the effect of extra payments.
- Savings Goal Calculator – Monthly Deposit and Time to Reach a Goal – Monthly deposit needed for a goal, or time to reach it, with interest.
Frequently asked questions
Is this financial advice?
No. The calculators give general information based on the numbers you enter. They do not take your circumstances into account, and they do not recommend products or investments. Talk to a qualified adviser, your bank or your lender for advice.
What do the calculators assume about interest rates?
A fixed rate for the whole period, with no fees, taxes, withdrawals or inflation. Real savings rates and loan terms can change, and investment returns are not guaranteed.
Which currency do the calculators use?
Any. Results are shown as plain numbers in your own currency, so there is no conversion. The default tip percentage changes with your region, and you can overwrite it.
What is the difference between simple and compound interest?
Simple interest is paid on the original amount only. Compound interest is paid on the amount and on the interest already added. Over long periods compounding makes a large difference.
Does the loan calculator work for a mortgage or car loan?
It works for any fixed-rate loan with equal monthly payments, including car and personal loans. For a home loan, taxes, insurance and fees are extra and not included.
Do the calculators cover tax, invoices or pay?
No. They cover everyday sums only. Tax, VAT or GST, invoicing and pay calculations depend on local rules and are outside this section.