Loan Calculator
This loan calculator helps you estimate the monthly payment and lifetime borrowing cost for a standard amortizing loan.
Enter your numbers and review the live output
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Understand what this tool measures
The page is useful for personal loans, renovation loans, and other fixed borrowing scenarios where users want a fast monthly payment estimate plus a realistic view of total interest. The extra-payment comparison also turns it into a planning tool instead of a one-number answer.
Enter the loan amount, interest rate, and term to estimate monthly payment, total interest, and total paid. You can also add an extra monthly payment to see how faster payoff changes the outcome.
What it measures
This calculator measures the main money relationship behind loan calculator, turning inputs into a planning number instead of a rough guess.
What affects the result
Rates, time horizon, payment size, and other scenario assumptions usually have the biggest impact on the final result.
How people use it
People use the output to compare options, pressure-test affordability, and decide whether the current setup still fits the goal.
How to keep the result
This loan calculator supports shareable URL state, so the current inputs can be copied into a link and reopened later without re-entering the scenario.
What the result means
The result shows how much the loan costs each month and how much total interest accumulates if the debt runs its full term. When extra payments are added, the output also makes the payoff-speed tradeoff clearer.
How people use this calculator
Personal loan planning
Estimate payment on a $25,000 loan at 7.2% over 5 years.
You can see the monthly cost, lifetime interest, and what happens if you pay extra each month.
Faster payoff check
Add an extra $100 per month to a fixed-rate loan.
The calculator shows how much time and interest could be saved.
Tips, considerations, and assumptions
Use these notes to pressure-test the result before acting on it. They are written for this calculator specifically, so the output is easier to use in the real decision behind the math.
Important considerations
- Monthly payment and total interest move in opposite directions. A lower payment often means carrying the debt for longer and paying much more overall.
- If you already know the payment you can handle, solving for the rate or term can show what kind of loan structure actually fits the budget.
Practical tips
- Treat the solved payment as the starting point, then compare a shorter term or extra-payment plan to see how much interest can be cut.
- If the implied rate looks unusually high, check the total fees and dealer add-ons behind the loan instead of assuming the payment is normal.
Assumptions and limits
- This calculator models a standard amortizing loan with fixed payments.
- Taxes, fees, and optional insurance products should be modeled separately unless they are financed into the balance.
Calculator feedback
Tell us if this calculator is working well
Use quick feedback if the result looks right or flag an issue if something seems off. Reports include the current calculator URL so the scenario can be reviewed.
Common questions
How is loan payment calculated?
This calculator uses the standard amortizing loan formula based on principal, interest rate, and loan term.
What does an extra payment do?
An extra payment reduces principal faster, which can shorten the payoff period and reduce total interest.
Can I use this for personal loans or small business loans?
Yes. As long as the loan follows a standard amortizing structure, the calculator can be used as a planning estimate.
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