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45 free calculators

Free Loan, Interest, Mortgage & Financial Calculators

Start with the calculation you actually need. These browser tools cover daily interest and per diem, loan payments and payoff, mortgages, annuities, savings, investing, debt, seller financing, and advanced loan questions.

Turn calculations into printable documents

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Make smarter mortgage & home-equity decisions

Two in-depth calculators with interactive loan schedules, scenario comparisons, printable results, and full CSV exports. No registration required.

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Free Time Card & Timesheet Calculator

Enter start times, end times and unpaid breaks. Add overnight or split shifts, total weekly hours, estimate overtime and print or download a CSV timesheet. No signup required.

Popular interest and loan tools

Loan & interest

Savings, investing & annuities

Mortgage & payoff

Professional loan, payoff & private-lending tools

These calculators handle the situations that generic payment calculators usually skip: exact dates, changing balances, construction draws, seller financing, and real payment histories.

Popular calculation problems

Start with the question you are trying to solve. Each page below explains the issue and sends you directly to the right free calculator.

More specialized calculators remain available through the navigation menu, including seller financing, irregular payment reconciliation, debt payoff, retirement, net worth, and rate conversion tools.