Finance Calculators— Guides & Articles

• How to Calculate Discount in Excel: The Right Formula

  Published 2026-07-13

  Calculate discount in Excel with the exact formulas, copy them into your sheet, and use a free tool to double-check stacked coupon math before checkout.

  

• Calculate CD Compound Interest with a Free Online Tool

  Published 2026-07-13

  Calculate compound interest on a CD by entering your principal, rate, term, and compounding frequency. Compare annual, monthly, and daily results instantly.

  

• How to Calculate a Car Loan Payment by Hand and Online

  Published 2026-07-13

  Calculate your monthly car loan payment in seconds. Use our free Car Loan Calculator to estimate total interest and total cost from price, APR, and term.

  

• How to Calculate Home Affordability With the 28/36 Rule

  Published 2026-07-13

  Use the 28/36 rule and your income, debts, and down payment to calculate how much house you can actually afford before you start shopping.

  

• How to Calculate Compound Interest the Easy Way | Lizely

  Published 2026-07-13

  Calculate compound interest in three quick steps: enter the principal, rate, and compounding frequency, then read the final amount and total interest earned.

  

• How to Calculate Simple Interest with a Free Calculator

  Published 2026-07-13

  Use our free simple interest calculator to find interest earned and total balance instantly. Enter principal, rate, and time — no signup, no formulas to…

  

• How to Calculate Car Loan APR Step by Step

  Published 2026-07-12

  Calculate car loan APR using the standard formula. Find out what rate you are really paying and how it affects your monthly auto payment.

  

• Tip Before or After Tax: How to Calculate It Right

  Published 2026-07-12

  Most etiquette experts say you should tip on the pre-tax subtotal, not the post-tax total. Here's why, plus how to split a bill fairly using a free tip…

  

• Calculate Simple Interest Over Multiple Years in One Step

  Published 2026-07-11

  Simple interest over multiple years is calculated with the formula A = P(1 + rt). Enter your principal, rate, and time to see interest earned and total…

  

• How to Calculate ROI in 30 Seconds with a Free Online Tool

  Published 2026-07-10

  Return on investment (ROI) tells you how much profit you earned relative to the cost. Use this free ROI Calculator to get your percentage and net profit…