Loan Calculator
Use this calculator for basic calculations of common loan types such as mortgages, auto loans, student loans, or personal loans, or click the links for more detail on each.
| Period | Payment | Principal | Interest | Balance |
|---|
Use this calculator to find the amount due at maturity for a loan where interest accrues but no payments are made until the end of the term.
| Year | Start Balance | Interest | End Balance |
|---|
Use this calculator to compute the initial value of a bond/loan based on a predetermined face value to be paid back at bond/loan maturity.
| Year | Start Balance | Interest | End Balance |
|---|
Instant Results
All calculations happen right in your browser — no server required, no waiting.
Private & Secure
Your data never leaves your device. No tracking, no accounts, no personal data collection.
Works Everywhere
Optimized for desktop, tablet, and mobile. Use All-Calc on any device, any browser.
Understanding Loans
Loan Types Explained
A guide to the three main loan structures used in this calculator
Fixed Amount Paid Periodically. Regular payments are applied to both principal and interest until the loan is fully paid off. This covers the most familiar loan types — mortgages, car loans, student loans, and personal loans.
Single Lump Sum Due at Maturity. Common in commercial or short-term lending, these loans require no periodic payments — instead, all principal and accrued interest are repaid in one lump sum at the end of the term.
Predetermined Amount Paid at Maturity. The borrower receives an amount today and repays a fixed face value at maturity. This calculator handles zero-coupon bonds, where no interim interest is paid — it accrues and is settled at the end.
Two common bond types are coupon and zero-coupon bonds. With coupon bonds, lenders base interest payments on a percentage of the face value, paid at regular intervals (usually annually or semi-annually). Zero-coupon bonds do not pay interest during the life of the bond — instead, they are sold at a discount and redeemed at face value at maturity. This calculator runs calculations for zero-coupon bonds.
Nearly all loans include interest — the profit lenders earn. It is usually expressed as APR (Annual Percentage Rate), which includes both interest and fees. Savings accounts use APY (Annual Percentage Yield). Understanding the difference between APR and APY helps borrowers compare true costs accurately.
Compound interest accrues not just on the original principal, but also on accumulated interest from prior periods. More frequent compounding means a higher total amount owed. Most consumer loans compound monthly, but options like daily or continuous compounding can significantly increase costs over time.
The loan term is the total duration of the loan, assuming minimum payments are made on schedule. Longer terms generally mean lower periodic payments, but result in more interest paid over the life of the loan — raising the overall cost to the borrower.
Consumer loans fall into two broad categories based on whether collateral is involved.
A secured loan requires the borrower to pledge an asset as collateral. The lender holds a lien — the legal right to seize that asset if the borrower defaults. Mortgages and auto loans are the most common examples: the lender holds the deed or title until the loan is fully repaid.
Secured loans generally offer better approval odds, lower interest rates, and higher borrowing limits because the collateral reduces lender risk. However, defaulting can mean losing your home or vehicle.
Unsecured loans require no collateral. Because lenders carry more risk, they assess creditworthiness through the Five C's of Credit:
Unsecured loans typically carry higher rates and lower limits. Common examples include credit cards, personal loans, and student loans.