Free loan calculators
See what a loan really costs before you sign.
Three free calculators: your monthly payment and true APR with fees, the real cost of a payday loan rollover, and a side-by-side comparison of two loans.

Calculator 1
Monthly payment and true APR
Most personal loans charge an origination fee. This calculator shows how that fee changes the real APR.3
- Principal
- Interest
- Fee
Calculator 2
What a payday loan really costs
A typical payday loan charges about $15 per $100 for two weeks.4 See what happens when it is rolled over.
Calculator 3
Compare two loans side by side
A lower monthly payment does not always mean a cheaper loan. Compare the total interest.
Loan A
–per month–Loan B
–per month–Read the numbers
How to use the results
- 1
Compare APR, not the interest rate
The APR adds most fees to the interest rate, so it shows the real yearly cost.2
- 2
Watch the origination fee
Fees are often taken out of the loan, so you receive less than you borrow.3
- 3
Shorter term, less interest
A longer term lowers your monthly payment but usually raises the total interest. Use the compare tool to see the trade-off.
- 4
These calculators give estimates for illustration only. They assume fixed rates and equal monthly payments. Your lender’s Truth in Lending disclosure shows your actual APR, finance charge and payment schedule.
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Sources
Sources for this page
Official and primary sources only. Last reviewed October 17, 2026.
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1
Federal Reserve BoardOfficial statisticsConsumer Credit G.19
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2
Consumer Financial Protection BureauRegulator guidanceWhat is the difference between a loan's interest rate and its APR?
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3
Consumer Financial Protection BureauRegulator guidanceDo personal installment loans have fees?
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4
Consumer Reports AdvocacyCFPB findingsSummary of CFPB payday loan research
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5
America's Credit UnionsNCUA rulesComparing PALs I and PALs II Loans