Finance Calculators — Guides & Articles

• Calculate Car Loan Payment With Interest Before You Sign

  Published 2026-07-28

  Estimate your monthly car loan payment with interest. See total interest and total cost in your browser with the free Car Loan Calculator.

  

• How to Calculate Inflation Rate Using GDP Deflator Data

  Published 2026-07-27

  Pull an inflation rate out of GDP deflator data, then project future cost and purchasing power with a free browser-based Inflation Calculator.

  

• How to Calculate the Housing Affordability Ratio

  Published 2026-07-27

  Calculate your housing affordability ratio with the 28/36 DTI rule. See how front-end and back-end ratios set your maximum monthly housing payment.

  

• How to Calculate a Discounted Payback Period

  Published 2026-07-27

  Calculate a discounted payback period by applying a discount rate to future cash flows, or use the Discount Calculator for instant percent-off math on any…

  

• How to Calculate Compound Interest on a BA II Plus Online

  Published 2026-07-26

  Calculate compound interest online without BA II Plus keystrokes. Enter principal, rate, frequency, and years to see the final balance instantly.

  

• Auto Loan Calculator: Estimate Your Monthly Car Payment

  Published 2026-07-26

  Use our free auto loan calculator to estimate your monthly car payment, total interest, and total loan cost. Enter your price, down payment, trade-in, APR,…

  

• How to Calculate Retirement Expenses and Monthly Income

  Published 2026-07-25

  Figure out what your retirement expenses will look like and what monthly income your savings can support. Use the 4% rule to plan ahead with confidence.

  

• Calculate Loan Payoff in Excel: NPER and Faster Options

  Published 2026-07-25

  Calculate loan payoff in Excel using the NPER function, or skip the spreadsheet with a free tool that returns the payoff time in months, total interest, and…

  

• How to Calculate Inflation Rate and Future Buying Power

  Published 2026-07-25

  Learn the inflation rate formula and project future cost and purchasing power. Enter amount, rate, and years to see how inflation affects your money.

  

• How to Calculate Your Housing Affordability Index

  Published 2026-07-25

  Calculate a housing affordability index from income, debts, and down payment using the 28/36 rule. Find your maximum home price with this free tool.