Free financial calculators. Instant mock data.

Model payoff strategies, project growth, and generate realistic datasets in seconds — all free, all in your browser.

Mortgage Payoff Calculator

See how extra monthly payments cut years and interest off a home loan.

Project how a starting balance plus monthly contributions grows over time.

Work out the monthly payment and full amortization for an auto, personal, or student loan.

List your debts, pick snowball or avalanche, and see exactly when you'll be debt-free.

Project your nest egg at retirement, then see how long it lasts once you draw it down.

Build a schema and export thousands of rows of realistic fake data as CSV or JSON.