Free online tool

Mortgage Calculator

Understand the estimated monthly and lifetime cost of a home loan with every assumption visible.

Scenario calculated locally

Use Mortgage Calculator

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What this tool does

Estimate principal, interest, taxes, insurance, PMI, HOA, and mortgage payoff.

Method

Fixed-rate principal and interest use the standard amortization formula; optional property costs and extra payments are added separately and reconciled to a month-by-month schedule.

Example

Compare a 30-year $320,000 loan at 6.5% with and without a $150 extra monthly payment.

Inputs and outputs

You provideYou receive
  • Home price
  • Down payment
  • Term
  • Interest rate
  • Start date
  • Tax
  • Insurance
  • HOA
  • PMI
  • Extra payment
  • Monthly principal and interest
  • Estimated all-in payment
  • Total interest
  • Payoff date
  • Amortization schedule
  • Chart
  • Scenario comparison

Privacy and data use

Scenario calculated locally. Financial assumptions remain in the browser unless the user explicitly saves a scenario later.

Read the full privacy policy.

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Common questions

Is it free?

Yes. The core tool and its standard result or export are free to use.

Do I need an account?

No for the core utility. An account or private management token is requested only for capabilities that must persist, such as editable dynamic QR links.

Can I trust the result?

The method and assumptions are visible above. Time-sensitive tools name their sources and freshness; important financial, safety, legal, or operational decisions should be verified with the primary authority.