Free tools
Free Personal Finance Calculators
$10,000 invested at 7% for 30 years grows to about $76,000 — but add $100 a month and the same starting balance becomes $194,000. The math isn't intuitive until you see it run on your own numbers. The calculators below pair with our plain-English explainers, run in your browser, and link to the full article that explains the formula each one uses.
9 calculators · more on the way
Compound Interest Calculator
See how a starting balance grows over time with compound interest, optional monthly contributions, and adjustable compounding frequency.
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Inflation Calculator
Calculate how much a future expense will cost in today's purchasing power, or how much purchasing power your savings lose to inflation over time.
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Interest Calculator
Calculate the interest earned on a savings account or owed on a loan over a chosen period, using either simple or compound interest.
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Emergency Fund Calculator
Calculate how long it will take to build a 3-month, 6-month, and 12-month emergency fund based on your monthly expenses, current savings, and what you can save each month.
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Savings Goal Calculator
Work out how long you'll need to reach a savings target, or how much you need to save each month to hit a target by a specific date.
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Loan Calculator
Calculate the monthly EMI, total interest paid, and total amount owed on a loan — and compare the same loan side-by-side at three different tenures to see how time changes the math.
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Salary Negotiation Impact Calculator
See the lifetime earnings impact of negotiating a higher starting salary, or compare staying at one job versus switching every few years over a 30-year career.
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PPF Maturity Calculator
Calculate the maturity amount, total contributed, and total interest earned on a Public Provident Fund account based on your annual contribution, lock-in period, and the current PPF interest rate.
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FD Calculator
Calculate the maturity value and total interest earned on a Fixed Deposit (FD in India) or Certificate of Deposit (CD in the US), comparing three tenures side by side at any compounding frequency.
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