Loan Calculator
Every payment on a loan, split into principal and interest.
PRINCIPAL & INTEREST - FULL SCHEDULE - RUNS ON YOUR DEVICE
Your loan figures stay on your device
- Amountrate and term
- 1 rowper payment
- Printor save as PDF
- 0data sent
Loan Calculator at a glance
- Inputs
- Amount, rate, term, frequency
- Output
- A printable schedule
- Method
- Fixed-rate, fixed-term formula
- One at a time
- One loan per schedule
- Extra payments
- Extra each month, term shortens
- Price
- Free
- Account required
- No
- Where it runs
- On your device
How to use Loan Calculator
- 1
Enter the loan
Enter the loan.
- 2
Set the frequency
Set the frequency.
- 3
Read the table
Read the table.
Frequently asked questions
What does the table show?
One row per payment, with the interest charged, the principal repaid and the balance left. The balance reaches zero on the last row.
Can I add extra payments?
Yes. There is a field for an extra amount each month. Add to it and the schedule ends early — the Payments made row reads the shortened count against the original term, and the total interest drops to match.
Are my loan figures private?
Yes. The calculation runs in this browser tab. Amount, rate and term are never sent anywhere, and they are gone once the page is closed.
Can I keep a copy?
Use your browser's print command. That prints the schedule or saves it as a PDF, which is the way to file it.
Why early payments are mostly interest
Give the amount borrowed, the annual rate and the term. A table appears with one row per payment, showing what goes to interest, what goes to principal and what is left.
- Interest is charged on the balance still owed, and at the start that balance is at its largest.
- As the balance falls, the interest part of each payment falls with it, so more goes to principal.
- The payment itself does not change on a fixed-rate loan; only the split inside it changes.
- A shorter term raises the payment and lowers the total interest, row by row.
Full specification
| Inputs | Loan amount, annual interest rate, term in years or months, and payment frequency. |
|---|---|
| Output | A printable table of the whole schedule, one row for every payment. |
| Method | The standard formula for a loan at a fixed rate over a fixed term. |
| One at a time | One schedule for one loan; two loans are not placed side by side. |
| Extra payments | An extra amount each month is added to every payment; the schedule ends when the balance does. |
| Price | Free |
| Account required | No |
| Where it runs | In your browser tab. Nothing is sent anywhere. |
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