Free tools · Forever · No email gate

Run your own numbers

Every guide on Mintmark ends at the same advice: do the math for your life. These four calculators do it in under a minute — same formulas the banks use, none of the lead forms.

What will my investments become?

Compound Interest Calculator

Project any balance with monthly contributions and watch the moment growth overtakes deposits.

Covers: investment growth, rule of 72, future value

What does that house really cost?

Mortgage Payment Calculator

Monthly P&I, lifetime interest, and the down-payment trade-offs — before the open house.

Covers: home loan, monthly payment, amortization

When will I get there?

Savings Goal Calculator

The exact month your emergency fund or house deposit is fully stocked — and how to arrive sooner.

Covers: emergency fund, monthly deposit, APY

When am I free?

Debt Payoff Calculator

Your debt-free date, total interest, and the outsized power of adding even $50 a month.

Covers: credit card debt, APR, debt-free date

Why these are free

Most finance sites gate their best tools behind email capture. We don't — Mintmark is funded by unobtrusive advertising and occasional partner links, never by holding your own math hostage. If a calculator changed a decision for you, the best repayment is sending it to one person who needs it.