Finance Calculators
Loan Calculator
Estimate monthly loan payments, total repayment, and total interest.
Open calculatorCALCULATOR CATEGORY
Finance Calculators
Estimate loan and mortgage payments or compound growth with transparent assumptions, formulas, and limitations.
Finance Calculators
Mortgage Calculator
Estimate a principal-and-interest mortgage payment from price, down payment, rate, and term.
Open calculatorFinance Calculators
Compound Interest Calculator
Project investment growth with configurable interest and compounding frequency.
Open calculatorUnderstand what the finance estimates include
The loan and mortgage calculators estimate fixed-rate, fully amortizing principal-and-interest payments. The compound interest calculator projects the growth of one starting balance at a stated nominal rate and compounding frequency. These tools are planning aids, not quotes or investment forecasts.
- Use the annual interest rate and term from the same loan scenario before comparing monthly payments.
- Mortgage estimates exclude property tax, insurance, association fees, closing costs, and changing rates.
- The lump-sum compound calculator excludes deposits; its separate monthly savings planner includes month-end deposits and a year-end breakdown.
LEARN & APPLY
All guides →Calculation guides
Worked decisions, assumptions, and checks that put the tools in context. Guides are currently published in English.
Compare Loan Payments, Total Interest & Extra Principal Payments
Learn to compare fixed-rate borrowing scenarios, read an amortization schedule, and test how extra principal payments affect interest and payoff time.
Read the guide →Compound Growth With Monthly Deposits: Separate Contributions From Returns
Compare lump-sum growth with regular monthly savings, inspect end-of-month deposit timing, and distinguish money contributed from modeled interest.
Read the guide →