Free Finance Calculators
Loans, discounts, ROI, NPV, and savings math for everyday money decisions.
- Consumer tools: tip, sales tax, discount, and percentage helpers
- Investing math: compound interest, ROI, NPV, and IRR
- Loan and mortgage payment scenarios
14 tools in this category
Compound Interest Calculator
Future value with annual compounding
OpenLoan Payment Calculator
Monthly payment on a fixed-rate loan
OpenSales Tax Calculator
Add or extract sales tax from a price
OpenTip Calculator
Calculate tip and split the bill at a restaurant
OpenInflation Calculator
Purchasing power loss over time
OpenBreak-Even Calculator
Units needed to cover fixed and variable costs
OpenNPV Calculator
Net present value of cash flows
OpenIRR Calculator
Internal rate of return (Newton's method)
OpenMortgage Extra Payment Calculator
Compare payoff time with extra principal payments
OpenAnnuity Future Value
Future value of monthly contributions plus initial deposit
OpenGordon Growth Model
Stock valuation using dividend discount model
OpenPayback Period Calculator
Simple and discounted payback period
OpenDiscount Calculator
Sale price, savings, and original price from a discount
OpenROI Calculator
Return on investment as a percentage and multiple
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