Finance calculators

90 calculators across 10 categories — loans, investing, retirement, mortgages, credit, and everyday budgeting. Every one runs in your browser: free, private, no sign-up.

Loans & Debt

15 tools

Calculate loan payments, amortization schedules, and debt payoff timelines.

Investing

15 tools

Project investment growth, and calculate returns, yields, and cash-flow metrics.

Retirement

5 tools

Project retirement savings growth across 401(k), IRA, and general retirement accounts.

Banking & Interest

9 tools

Simple and compound interest, APY/APR, savings goals, CDs, and inflation.

Salary & Income

12 tools

Convert between salary formats, calculate overtime and paychecks, and estimate take-home pay.

Real Estate & Mortgage

12 tools

Mortgage payments, affordability, refinancing, rent vs. buy, and rental property returns.

Credit

7 tools

Credit card interest, payoff timelines, utilization, balance transfers, and HELOCs.

Business Finance

8 tools

Profit margins, markup, break-even analysis, business loans, cash flow, and growth.

Everyday Budgeting

5 tools

50/30/20 budgets, emergency funds, tipping, freelance rates, and event budgets.

Currency & International

2 tools

Foreign exchange fees and currency gains/losses on rates you enter.