ROI Calculator

Calculate ROI, returned amount, or invested amount with a simple mode-based setup.

$
$
%
In “Find ROI %” mode, enter Invested amount and Returned amount. In the other modes, enter the two known values.

More of our calculators...

Credit Card Interest Calculator

Estimate credit card interest charges from APR, balance, and payment. See monthly interest and total cost.

Balance Transfer Calculator

Compare balance transfer offers. Estimate savings, transfer fees, promo APR period, and payoff timeline.

Interest Rate Calculator

Calculate interest rate from loan amount, payment, and term. Works for monthly schedules and amortized loans.

Inflation Calculator

Estimate how inflation changes purchasing power. Convert past prices to today’s value and see cumulative inflation.

Salary calculator

Convert hourly, weekly, or monthly pay to annual salary (and reverse). Includes overtime and hours/week inputs.

PayPal Fee Calculator

Calculate PayPal fees, net received, or the amount to charge. Supports percent + fixed fee fee models.

Mortgage Calculator

Calculate mortgage payments, total interest, and amortization. Include loan amount, rate, term, and down payment.

Mortgage Interest Calculator

Estimate total mortgage interest and monthly interest over the loan term. Compare rates and terms quickly.

Mortgage Calculator with Taxes and Insurance

Calculate total monthly mortgage payment including taxes, insurance, and HOA. Estimate full PITI cost accurately.