Mortgage, amortization, and investment calculators for real estate.

Real estate agents and buyers need quick, reliable financial calculations to evaluate properties and advise clients confidently. SpecWhale covers mortgage payments, amortization schedules, debt-to-income ratios, and ROI analysis — all with no account required and full privacy.

Featured Tools for Real Estate Agents & Buyers

Zero-upload, 100% private client-side calculators and converters.

Mortgage Calculator

Estimate principal and interest mortgage payment.

Finance · Calculator

Amortization Calculator

Estimate monthly payment, total paid, and total interest for an amortizing loan.

Finance · Calculator

Debt To Income Calculator

Calculate debt-to-income ratio from monthly debt and gross monthly income.

Finance · Calculator

Loan Payment Calculator

Estimate monthly loan payment, total interest, and overall cost from principal, APR, and term.

Finance · Calculator

ROI Calculator

Calculate return on investment from cost and gain.

Business & Shopping · Calculator

Compound Interest Calculator

Calculate future portfolio value with compound interest, monthly contributions, and see how much is growth vs contributions.

Finance · Calculator

Savings Rate Calculator

Calculate savings rate from income and saved amount.

Finance · Calculator