Finance Calculators

EExponential Growth

💰 Finance Calculators

Compound interest, mortgages, and financial planning — powered by the E in GEMS: Exponents and exponential growth.

GEMS Connection: Finance is the E in GEMS — Exponents. Compound interest is literally exponential growth: A = P(1 + r/n)^(nt). Understanding exponents is understanding money.
Free Online Calculators

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Compound Interest Calculator

Calculate compound interest growth over time. See how your money multiplies with different rates, periods, and compounding frequencies.

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Mortgage Calculator

Calculate monthly payments, total interest paid, and full amortization schedule for any home loan.

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Tip Calculator

Split bills and calculate tips instantly. Handles any party size and tip percentage with per-person breakdowns.

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Loan Payment Calculator

Find your monthly payment, total cost, and total interest for any loan.

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Sales Tax Calculator

Add sales tax, reverse-calculate pre-tax price, or find the tax rate instantly.

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Savings Goal Calculator

Find out how long to reach your savings goal with monthly contributions and interest.

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ROI Calculator

Calculate return on investment, net gain or loss, and annualized ROI.

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Break-Even Calculator

Find the units needed to cover costs and start turning a profit.

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Retirement Savings Calculator

Project your retirement balance and monthly income from your savings plan.

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