Finance calculators

Compound interest

How much your money grows with regular contributions, and what it is really worth once inflation and fees…

Loan

Monthly payment, total interest, APR with fees and insurance, and how principal and interest split each year.

Mortgage

Monthly payment, total interest and the cash you need upfront to buy a home.

Discount

Final price after a discount and exactly how much you save.

Compare loans

Compare two offers for the same amount: payment, APR, total cost, which is cheaper if you repay early and…

Savings

How much you will accumulate by saving a fixed amount every month for several years.

Retirement & FIRE

How much capital you need to live off your investments, whether you reach it by retirement age, how much to…

Investment

Future value of an investment and what it is really worth after inflation.

DCA calculator

How much you will have if you invest a fixed amount every month: final value, value in today’s money, real…

Simple interest

Work out the interest a principal earns without reinvestment, in years, months or days.

ROI

Measure the percentage return of any investment or campaign.

Monthly payment

Instalment amount when the term is quoted directly in months.

Amortisation

Payment by payment: interest and principal, and how much you save and how many months you cut by overpaying…

Inflation

What your money will be worth in a few years at a given inflation rate.

Annualised return

Turn a total gain into the equivalent annual rate so you can compare like for like.

Margin

A clear distinction between margin on price and markup on cost.

Percentage increase

Apply a percentage rise to any amount and see the exact difference.

Selling price

Set your price from the cost and the margin or markup you want to achieve.

Tip

Tip, total and split between diners in a single calculation.

NPV and IRR

Appraise a project with different cash flows each year: NPV, IRR, modified IRR, profitability index, payback…