Finance Calculators — Guides & Articles

• Retirement Calculator on iPhone: Run It in Safari

  Published 2026-09-17

  Use a retirement calculator on iPhone in Safari — no app download. Project your nest egg and 4%-rule monthly income from age, savings, and contributions.

  

• Free Mortgage Calculator: Estimate Without Signing Up

  Published 2026-09-17

  Use a free mortgage calculator to estimate your monthly payment, total interest, and full amortization schedule. No sign-up, no fees — runs in your browser.

  

• Loan Payoff Calculator: What the Numbers Really Mean

  Published 2026-09-17

  Loan payoff calculator explained: enter your balance, APR, and monthly payment to get an exact debt-free date and total interest.

  

• Inflation Calculator on Mac: Run It in Your Browser

  Published 2026-09-16

  Run a free inflation calculator on Mac in any browser. No install needed. Enter an amount, rate, and years to project future cost and purchasing power.

  

• Home Affordability Calculator With Steps for Each Input

  Published 2026-09-16

  Run a home affordability calculator's steps to find the maximum home price you can afford from your income, debts, and down payment using the 28/36 rule.

  

• Discount Calculator Percentage: Compare Deals the Right Way

  Published 2026-09-16

  A discount calculator percentage converts any percent off into the sale price and dollar savings. Stack coupons to see the true combined effective discount.

  

• Compound Interest Calculator on Android in Your Browser

  Published 2026-09-16

  Run a compound interest calculator on Android in any browser — no install, no sign-up, no data upload. Enter principal, rate, frequency, and years.

  

• Car Loan Calculator Tips and Common Mistakes to Avoid

  Published 2026-09-16

  Practical car loan calculator tips to estimate your monthly auto payment, total interest, and total cost — and the common mistakes to avoid before you sign.

  

• Tip Calculator Formula: The Exact Math Behind the Numbers

  Published 2026-09-15

  The tip calculator formula broken down: bill × rate for the tip, total ÷ people for each share. See how a free browser tool applies it instantly.

  

• How to Estimate the 2027 Social Security COLA

  Published 2026-09-15

  SSA hasn't announced the 2027 COLA yet. Use the Social Security COLA Calculator to model a projected rate, see the raw math, and compare against an official…