Comprehensive Mortgage Calculator: Plan Your Home Loan with Precision

The tool converts four numbers—price, down-payment %, term, and rate—into your monthly mortgage and full amortization. Key formula: $$M = P times rac{r(1+r)^{n}}{(1+r)^{n}-1}$$. For instance, a $660 000 loan at 3.2 % over 18 years ≈ $4 026/month. Average 30-year fixed rate is 6.63 % (Freddie Mac PMMS, 2023).