About CalcSherpa

Clear numbers for everyday decisions — free, private and easy to check.

CalcSherpa is a small, independent website that builds free calculators for everyday money and home-project questions for people in the United States. Big decisions like buying a home, financing a car or paying off a credit card deserve clear numbers, and getting them shouldn't require a sign-up form or a sales pitch.

How we build our calculators

• Standard formulas. Each calculator uses published, widely accepted formulas — the same amortization and compound-interest math used by banks and textbooks.
• Show the work. Every page explains the formula and walks through a worked example, so you can check any result yourself.
• Tested before publishing. We test each calculator against hand-worked examples and re-check it whenever we change it.
• Official sources. Money topics cite primary sources such as the Consumer Financial Protection Bureau, the IRS and the U.S. Department of Labor.
• Private. Calculations run entirely in your browser. We never collect the numbers you enter.

Editorial policy

Pages are written and reviewed by the CalcSherpa team. We aim to be accurate, plain-spoken and free of hype — no "get rich" promises and no inflated numbers. Each page shows the date it was last reviewed. When rules change (for example, retirement contribution limits), we update the page and the date.

We use AI tools to help draft text and create illustrations, and every page is checked by a person before it's published.

Corrections

If you find a mistake, please tell us. We review every report and fix confirmed errors quickly.

Important note

Our calculators give estimates for educational purposes. They are not financial, tax or legal advice. For decisions that matter, confirm the numbers with your lender or a qualified professional. See our disclaimer and how we make money.