About EstateMath
EstateMath provides free, professional-grade real estate calculation tools. No subscriptions, no accounts, no marketing noise — just the numbers you need to make informed decisions.
Property investment decisions are made under conditions of uncertainty. The tools available to individual landlords have historically lagged behind those used by institutional investors. EstateMath exists to close that gap.
Our calculators are built on the same analytical frameworks used by professional property analysts and mortgage advisors. Every formula is transparent. Every input is explained. No result is dressed up or simplified beyond usefulness.
Our Values
We do not round numbers or hide complexity. Accurate inputs produce accurate outputs — that is the only standard we accept.
All calculations run locally in your browser. No financial data is transmitted, stored, or sold. What you calculate stays with you.
Every tool documents its formula. If you disagree with an assumption, you can see exactly where to challenge it.
Professional-grade analysis should not require a subscription. EstateMath's tools are free for individual investors, indefinitely.
The Team
Marcus brings 11 years of buy-to-let analysis experience. He designed the rental yield calculator and writes on residential investment strategy for the EstateMath blog.
Diana advises institutional investors on valuation methodology. Her focus on cap rate analysis informs both the blog content and the commercial applicability of EstateMath's tools.
Owen built the mortgage cashflow tool based on frameworks he applies to his own portfolio of 14 properties. He writes on refinancing risk, stress-testing, and rate strategy.