About SenseCalc

SenseCalc exists for one reason: big money decisions deserve clear numbers. Buying a home, taking a car loan, paying off credit cards, deciding how much to put in a 401(k) — each one is easier when you can see exactly what the choice costs and what it's worth.

What we build

We make free calculators for the decisions US households face most often, and we write plain-English guides that explain the results. Every calculator:

• Shows its work. Each page explains the formula, the assumptions and where they come from.
• Uses current numbers. Tax calculations use the 2026 federal brackets, the 2026 Social Security wage base and each state's 2026 rules. Starting rates (mortgages, auto loans, credit cards, savings) come from published averages and are reviewed monthly.
• Gives you the details. Full amortization schedules, year-by-year tables and CSV downloads, so you can check anything in a spreadsheet.
• Respects your privacy. You don't need an account. The numbers you type stay in your browser; we don't store them.

How we keep calculators accurate

Every calculator is tested against worked examples and standard spreadsheet functions (PMT, FV, RATE) before it's published, and re-checked whenever tax rules or limits change. You can read the full process on our editorial policy page.

How SenseCalc is funded

SenseCalc is free to use and supported by advertising. Ads never change what a calculator shows, and we don't accept payment to rank or recommend any lender, bank or product.

Important

Our calculators and guides are for education and estimates. They aren't financial, tax, investment or legal advice, and results depend on the numbers you enter. For decisions with large consequences, talk with a licensed professional. See our disclaimer.

Get in touch

Found a bug, have a question about a result, or want a calculator we don't have yet? Contact us — we read every message.