Free tools

Family finance calculators

Run the numbers on the biggest financial decisions families face — free, no signup required, personalized to your situation.

Why use our calculators?

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Built for families

Our calculators are designed for parents — not single professionals or retirees. The categories, assumptions, and outputs reflect real family finances.

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Private by design

All calculations happen in your browser. We never store, transmit, or sell the numbers you enter. No account required.

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Methodology disclosed

Every calculator includes a methodology section explaining the data sources, assumptions, and formulas used. No black boxes.

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Always free

All calculators are free to use, with no limits. We earn revenue through affiliate partnerships — not by charging you.

Not sure where to start?

Take our 2-minute money personality quiz to find out which calculator is most relevant for your family right now.

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