Loan calculator

Estimate a fixed monthly payment and total interest.

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Loan calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Loan amount

Annual interest rate (%)

More inputs and assumptions

Monthly payments

Answer

…

Payment = principal × monthly rate ÷ (1 − (1 + monthly rate)^−payments). At zero interest, divide principal by payments.

More results

Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Assumes a fixed nominal annual rate, monthly compounding and end-of-month payments. Fees, insurance, tax and lender-specific daily interest are excluded.

Automatic precision shows money to two decimal places and other numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-26

Using Loan calculator

Payment = principal × monthly rate ÷ (1 − (1 + monthly rate)^−payments). At zero interest, divide principal by payments.

Assumes a fixed nominal annual rate, monthly compounding and end-of-month payments. Fees, insurance, tax and lender-specific daily interest are excluded.

Next: Down payment calculator

A worked example

With loan amount = 12000, annual interest rate (%) = 6, monthly payments = 12, the monthly payment is 1,032.80 (rounded to two decimal places).

Next: Auto loan calculator

Before you use the result

Assumes a fixed nominal annual rate, monthly compounding and end-of-month payments. Fees, insurance, tax and lender-specific daily interest are excluded. Calculations keep full browser-number precision. Money amounts are displayed to two decimal places; other results use up to 12 significant digits. Very large values may lose precision.

Example results for loan amount

These examples use Annual interest rate (%): 6; Monthly payments: 12. They are reference calculations, not recommended settings.

Loan amount	Monthly payment
6000	516.40
12000	1,032.80
24000	2,065.59

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