Calculate monthly car loan payments, total interest, and total cost. Enter loan amount, rate, and term for a complete auto financing picture. Everything runs locally in your browser — nothing is uploaded.
Calculate monthly mortgage payments with amortization schedule. Enter loan amount, interest rate, and term to see total interest paid. Everything runs locally in your browser — nothing is uploaded.
Calculate simple interest using principal, rate, and time. Find total interest earned and final amount for basic interest calculations. Everything runs locally in your browser — nothing is uploaded.
Calculate monthly lease payments using capitalized cost, residual value, term, and money factor. Compare lease vs buy for your next vehicle. Everything runs locally in your browser — nothing is uploaded.
Conversion Rate Calculator divides conversions by total visitors and displays the rate as a percentage with configurable decimal precision. Everything runs locally in your browser — nothing is uploaded.
Calculate customer churn rate by dividing customers lost by total customers. Monitor retention health for your subscription business. Everything runs locally in your browser — nothing is uploaded.
The 20/4/10 rule: 20% down, max 4-year term, total car costs under 10% of gross income. $6,000/mo income → ≈$600/mo all-in (payment + insurance + fuel). A $30,000 car at 8%/48mo ≈ $732/mo payment alone — over budget before insurance.
48 months max for new cars, 36 for used. 72–84 month terms lower the payment but keep you underwater (owing more than resale) for years — a $30k car at 8%/84mo costs ≈$9,200 in interest vs ≈$5,100 at 48mo.
Used wins on depreciation (new cars lose ~20% in year one), but used rates run 1–3 points higher. Compare total cost, not payment: a $20k used car at 9%/48mo (≈$24k total) vs $30k new at 7%/60mo (≈$36k total).
Yes if it avoids being underwater: put ≥20% down or cover the first-year depreciation gap. Gap insurance ($300–600) covers the remainder if you must finance with little down.
No. All calculations run locally in your browser. No amounts or rates leave your device.
Car Lease Calculator
Calculate monthly lease payments using capitalized cost, residual value, term, and money factor. Compare lease vs buy for your next vehicle. Everything runs locally in your browser — nothing is uploaded.
EMI Calculator
Splits a loan principal into equal monthly installments using the standard reducing-balance formula with configurable annual interest and tenure. Everything runs locally in your browser — nothing is uploaded.