Buying, selling, renting, or investing in property all involve calculations that can quickly get complicated. Our free property calculators cover the full range — from figuring out what a home costs to build or replace, to understanding what you’ll owe at closing or how much rental income a property will generate.
Whether you’re a first-time buyer, a landlord managing multiple units, or a real estate investor running the numbers before a purchase, these tools give you fast, accurate answers without needing a spreadsheet.
Rental and Investment Calculators
For landlords and property investors, understanding cash flow and return on investment is everything. These tools help you evaluate a rental property before you commit.
- Net Effective Rent Calculator — calculate the true monthly cost of a lease after factoring in free rent periods and concessions
- 3x Rent Calculator — quickly check if a tenant’s income meets the standard 3x rent rule that most landlords require
- Triple Net Lease Calculator — work out the full cost of a NNN lease for commercial tenants and landlords
Buying and Selling Calculators
Whether you’re a buyer preparing for closing day or a seller estimating your net proceeds, these calculators help you understand the real costs involved in a property transaction.
- Seller Closing Cost Calculator — estimate what you’ll pay in agent commissions, transfer taxes, title fees, and other closing costs when selling a home
- Earnest Money Calculator — find out how much earnest money deposit is typically expected based on the property purchase price
- CMA Calculator — run a basic comparative market analysis to estimate a fair listing or offer price based on comparable properties
Property Value and Replacement Cost Calculators
Understanding what a property is worth — and what it would cost to rebuild or replace — matters for insurance, investment decisions, and negotiation.
- Home Replacement Cost Calculator — estimate how much it would cost to fully rebuild your home if it were destroyed, an important figure for homeowners insurance
- Commercial Replacement Cost Calculator — get a replacement cost estimate for commercial properties, useful for insurance and asset valuation
- Mobile Home Valuation Calculator — estimate the current market value of a manufactured or mobile home
Construction and Measurement Calculators
For buyers, builders, and investors evaluating land or new construction, getting measurements right is critical.
- Cost to Build a House Calculator — estimate new home construction costs based on size, location, and finish level
- Square Footage Calculator — calculate the square footage of any room, lot, or property layout quickly and accurately
- Acre Calculator — convert measurements to acres, useful for land purchases and lot size comparisons
How to Use These Property Calculators
Each calculator on this page is designed to work independently — you don’t need to go through them in any particular order. Start with the question you need answered right now.
If you’re buying, the Earnest Money, Seller Closing Cost, and CMA calculators will help you understand costs before and during the transaction. If you’re renting out a property, the Net Effective Rent and 3x Rent calculators are good starting points. If you’re investing, use the Triple Net Lease and Home Replacement Cost calculators to evaluate long-term costs and risk.
For most real estate decisions, it helps to run a few of these tools together — for example, checking the Square Footage Calculator alongside the Cost to Build a House Calculator gives you a cost-per-square-foot estimate that’s useful for comparing builder quotes.
Frequently Asked Questions
How do I calculate rental property ROI? Rental property ROI is calculated by dividing your annual net income (rent minus expenses) by the total investment cost. For a quick estimate, use our Net Effective Rent Calculator to get the true rental income figure first, then factor in your mortgage, taxes, and maintenance costs.
How is property tax calculated? Property tax is typically calculated by multiplying the assessed value of your property by the local tax rate (mill rate). The assessed value is often a percentage of the market value, and rates vary significantly by county and state.
What is a triple net lease in real estate? A triple net (NNN) lease means the tenant pays not just rent, but also property taxes, insurance, and maintenance costs. Use our Triple Net Lease Calculator to see the full cost of a NNN lease compared to a standard gross lease.
How much earnest money is typically required? Earnest money deposits typically range from 1% to 3% of the purchase price in most US markets, though competitive markets may require more. Our Earnest Money Calculator gives you a ballpark figure based on the offer amount.
What does a seller pay at closing? Sellers typically pay real estate agent commissions (usually 5–6% of the sale price), transfer taxes, title insurance, and any outstanding liens or fees. The Seller Closing Cost Calculator breaks this down based on your property’s location and sale price.
Are these property calculators free? Yes — all 12 calculators on this page are completely free to use. No account, no signup, and no limits on how many times you use them.