Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
Loan Calculator
Calculate monthly payments, total interest, and amortization schedule for loans.
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$
Monthly Payment
$0.00
Total Interest
$0.00
Total Payment
$0.00
Amortization Schedule (Yearly)
| Year | Beginning Balance | Total Paid | Interest Paid | Principal Paid | Ending Balance |
|---|
What is a Loan Calculator?
A loan calculator helps you estimate your monthly payments and total interest for any type of loan — mortgage, auto, personal, or student loan.
This tool features:
- Monthly payment — Calculates your fixed monthly payment using the standard amortization formula.
- Total costs — See total interest paid and total payment over the full loan term.
- Amortization schedule — Yearly breakdown of principal, interest, and remaining balance.
- Instant results — Results update in real-time as you type.
How to Use
- Enter loan amount — Type the total loan amount.
- Enter interest rate — Input the annual interest rate as a percentage.
- Enter loan term — Specify the loan duration in years.
- View results — Monthly payment, total interest, and amortization schedule appear instantly.
Frequently Asked Questions
How is monthly payment calculated?
Monthly payment is calculated using the formula: M = P [r(1+r)^n] / [(1+r)^n - 1], where P is the loan amount, r is the monthly interest rate, and n is the number of monthly payments.
What is an amortization schedule?
An amortization schedule shows each payment's breakdown into principal and interest, along with the remaining balance. Early payments are mostly interest; later payments are mostly principal.
Can I use this for any loan type?
Yes. This calculator works for mortgages, auto loans, personal loans, student loans — any fixed-rate amortizing loan.
Is this tool free to use?
Yes. All processing happens entirely in your browser. No data is sent to any server.
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