What is Loan Calculator?
This loan calculator estimates mortgages and consumer loans. Enter the principal (default 100,000), annual rate (default 5%), and term (default 30 years), pick the equal-payment (等额本息) or equal-principal (等额本金) method, and results update instantly. Equal-payment shows the monthly payment, total repayment, and total interest; equal-principal shows the first-month and last-month payments plus total interest. Calculations use the standard monthly-compounding formulas and run entirely in your browser — no data is uploaded. Great for mortgage budgeting, prepayment planning, and comparing loan options.
▶Use Cases5 scenarios
- ◆Estimating mortgage payments and total interest
- ◆Comparing consumer loan offers
- ◆Assessing prepayment impact
- ◆Home-buying budget planning
- ◆Finance teaching demos
▶How to Use5 steps
- 1Enter the loan principal (default 100,000)
- 2Enter the annual rate in percent (default 5)
- 3Enter the term in years (default 30)
- 4Choose equal-payment or equal-principal
- 5Read the monthly payment, total interest, and total repayment
▶Features8 features
- ✓Free
- ✓No signup
- ✓Equal-payment and equal-principal methods
- ✓Real-time results
- ✓Monthly payment and total interest
- ✓First/last month for equal-principal
- ✓100% local calculation
- ✓Responsive layout
▶FAQ7 questions
What is a loan calculator?
An online loan estimation tool. Input: principal, annual rate, term, and repayment method. Output: monthly payment, total interest, and total repayment (plus first/last month for equal-principal). Used for mortgage and consumer loan budgeting. Runs locally.
What is the difference between the two methods?
Equal-payment keeps a fixed monthly amount with higher interest early on; equal-principal fixes the principal portion so payments decline over time with lower total interest.
How accurate are the results?
They use the standard monthly-compounding formulas (monthly rate = annual rate / 12, periods = years × 12), rounded to two decimals, consistent with mainstream bank calculations.
What are the default values?
Principal 100,000, annual rate 5%, term 30 years — all editable.
Does it support prepayment scenarios?
The current version computes standard repayment plans; compare total interest by shortening the term or lowering principal.
Is my data uploaded?
No. Everything is computed locally in your browser.
Does it support currencies other than CNY?
Results display the ¥ symbol, but the math is currency-agnostic — enter any currency amount.