Savings Calculators
7 free savings tools
Compounding frequency and time matter more than the headline rate.
Savings maths is simple but counterintuitive: the length of time you leave money alone usually outweighs the rate you earn on it. These calculators show how contributions, rate and compounding interact, and what you need to put aside each month to hit a specific target by a specific date.
Savings Calculator
Project how much your savings will grow with regular deposits and interest.
Open calculatorEmergency Fund Calculator
Find your ideal emergency fund size and how long it'll take to save it.
Open calculatorCD Calculator
Calculate the maturity value and interest earned on a certificate of deposit.
Open calculatorCollege Savings Calculator
Find out how much to save each month to reach your college funding goal.
Open calculatorSimple Interest Calculator
Calculate simple interest and the total owed or earned on a principal.
Open calculatorAPY Calculator
Convert a nominal interest rate into annual percentage yield (APY).
Open calculatorSavings Goal Calculator
Find out how much to save each month to reach a target by a chosen date.
Open calculator
Time does more work than rate
Someone saving for ten years and then stopping frequently ends up ahead of someone who starts ten years later and never stops, because the early contributions compound for longer. This is the single strongest argument for starting with a small amount now rather than a sensible amount later — the years you cannot get back matter more than the sum you begin with.
APY is the number to compare, not the interest rate
Annual percentage yield already accounts for how often interest compounds, so it lets you compare accounts fairly. An account paying slightly less but compounding daily can beat one paying slightly more annually. Where a bank quotes only a rate, convert it to APY before deciding.
Frequently Asked Questions
How does compound interest work?+
Interest is added to your balance, and future interest is then calculated on that larger balance. The effect is small at first and accelerates over time, which is why long horizons matter so much.
What is the difference between APR and APY?+
APR is the simple annual rate; APY includes the effect of compounding within the year. For savings, APY is the figure that reflects what you will actually earn.
How large should my emergency fund be?+
Three to six months of essential expenses is the usual guidance, weighted toward six or more if your income is variable or your household depends on a single earner.