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Money math, made clear.

Nine clear calculators for savings, loans, budgets, and everyday money decisions.

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Results update as you type. Each tool explains the formula behind the answer.

See how contributions and time compound into real growth.

Find your payment, total interest, and payoff date.

Principal, interest, taxes, and insurance - all in one payment.

Project your balance at retirement, in today's dollars or future ones.

Estimate your real paycheck after federal tax and FICA.

Split take-home pay into needs, wants, and savings.

Snowball vs. avalanche, compared side by side.

Project growth in nominal or inflation-adjusted terms.

Split the bill and the tip without the napkin math.

Start calculating immediately. There is no login or profile to create.

Inputs are calculated on your device and are not sent to our server.

Every result is labeled as an estimate, and every calculator includes a plain-English explanation.