Excalapp Calculator
Excalapp Calculator: A free web calculator for mortgage payoff scenarios and compound-interest projections. Ranked #28 of 34 in Mortgage Calculator Apps by our editors (6.7/10); pricing: Free plan; best for extra-payment and payoff analysis.
At a glance
- Editor score6.7 / 10
- PricingFree plan
- Best forExtra-payment and payoff analysis
- Free planYes
- Paid fromFree
- Amortization scheduleYes
- Facts checked14 Nov 2026
Where it wins
- Models extra principal payments and estimates interest and time saved
- Offers monthly or yearly amortization schedules with CSV export
- Includes charts and configurable compound-interest projections
Where it doesn't
- Mortgage estimates exclude taxes, insurance, PMI, and HOA dues
- Does not offer affordability analysis, refinance scenarios, or ARM support
- Available on web only
Our verdict on Excalapp Calculator
Excalapp Calculator is a free, browser-based tool for people who want to estimate mortgage payments and explore how extra principal affects payoff. Enter a home price, down payment, interest rate, loan term, and extra monthly principal to calculate the payment, loan amount, total interest, total payments, and payoff date. It also includes a separate compound-interest savings calculator, making it relevant to individual borrowers comparing payoff and savings projections rather than to users seeking a full home-buying budget planner.
The mortgage calculator’s strongest fit is payoff analysis: it estimates interest and time saved from extra principal payments and displays principal and interest over time in charts. Its amortization schedule can be viewed monthly or yearly and exported as CSV, which helps when reviewing or working with the payment breakdown outside the calculator. The separate savings projection supports configurable contributions and compounding frequency. These features make the tool useful for exploring specific scenarios, though its mortgage estimates exclude taxes, insurance, PMI, and HOA dues; those costs need to be considered separately.
The product is offered free and runs in a web browser without a backend, according to its project description. Its scope is narrower than an affordability or refinance tool: the listed capabilities do not include affordability analysis, refinance scenarios, or adjustable-rate mortgage support. Borrowers focused on principal prepayments, amortization, and compound-interest projections may find its focused set of calculators a good match. Those who need housing-cost estimates that include taxes and insurance, or tools for comparing loan structures and refinance options, should look for a calculator with those capabilities.
Your product? Our editors can test Excalapp Calculator in depth and publish a review, labelled as paid · from $149/mo →
Excalapp Calculator pricing
Excalapp Calculator fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Amortization schedule | Yes |
| Affordability analysis | No |
| Refinance scenarios | No |
| ARM calculations | No |
| Property-tax inputs | No |
| Insurance inputs | No |
| Platform access | Web |
| Deployment | Cloud |
| Platforms | Web |
| Built for | Solo (editorial estimate) |
| Pricing | Free plan |
| Website | excalapp.github.io |
| Facts checked | 14 Nov 2026 |
Alternatives to Excalapp Calculator
- Chase Mortgage CalculatorFree web calculators cover mortgage payments, affordability, refinancing and loan scenarios.9.4
- Bankrate Mortgage CalculatorA free web calculator for detailed mortgage payment and affordability estimates.9.3
- Fannie Mae Mortgage CalculatorA free web calculator with payment breakdowns plus separate affordability and refinance tools.9.2
See all Excalapp Calculator alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
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