Finance Calculators
Explainers on compound interest, loan amortization, APR, and percentage change tied to free finance calculators.
What Is Compound Interest?
Compound interest earns returns on both your principal and previously accumulated interest, accelerating growth over time.
Related tool: Compound Interest Calculator
Simple vs Compound Interest Explained
Simple interest applies only to principal; compound interest reinvests earned interest so balances grow faster over time.
Related tool: Compound Interest Calculator
How Loan Amortization Works
Amortization splits each loan payment between interest and principal so the loan is fully repaid by the end of the term.
Related tool: Mortgage Calculator with Amortization
APR vs Interest Rate Explained
The interest rate is the cost of borrowing on the balance; APR includes rate plus certain fees expressed as an annualized percentage.
Related tool: Loan Payment Calculator
How to Calculate Percentage Change
Percentage change measures relative increase or decrease from an original value to a new value.
Related tool: Percentage Calculator