About RunTheNumbersFirst

RunTheNumbersFirst offers free, no-sign-up calculators for real estate investors.

The site was built by an active investor who wanted calculators that include the costs real deals carry: vacancy, reserves, holding costs, auction fees and financing. Every page shows its formulas so you can check the math rather than trust a black box.

New calculators are added regularly. If there is a calculation you run by hand every time, email hello@runthenumbersfirst.com and it may become the next tool.

Important

These calculators produce estimates for education and analysis. They are not financial, tax, lending or legal advice. See the terms and disclaimer.