Price-to-Rent Ratio Calculator
Divide a home price by a year of rent and you get the number of years of rent that home costs. It’s the fastest way to tell whether a market leans toward buying or renting — and the quickest sanity check on an asking price.
Work out the ratio
It ignores the mortgage rate, property tax, insurance, maintenance, HOA dues, PMI — and how long you’d stay, which usually matters more than any of them.
How to calculate it
Annualise the rent
Multiply monthly rent by 12. Using annual rent is what makes the ratio mean something: “this home costs 18 years of rent.”
Divide the price by it
A $360,000 home against $2,000/mo rent is 360,000 ÷ 24,000 = 15. That’s the whole formula.
Compare like with like
Use rent for a comparable home. Pricing a three-bed house against a one-bed apartment’s rent inflates the ratio and makes buying look worse than it is.
Whichever way it lands, housing is the biggest envelope.
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Start free trial — no credit cardWhat is a good price-to-rent ratio?
The convention most analysts use: under about 15 favours buying, over about 21 favours renting, and the middle is close to a toss-up. Those are bands, not thresholds — 14.8 and 15.2 are the same answer, and treating the boundary as precise is the most common way this metric gets misused.
What the ratio really measures is how expensive it is to own in a market relative to renting in that same market. A high ratio says purchase prices have run ahead of rents, which historically has meant buyers were paying more for the same shelter. It does not say prices will fall, and it says nothing about your own situation.
Why the ratio can’t decide it for you
Two inputs and one division can’t capture a decision this size. The ratio is blind to the mortgage rate — the same ratio is a very different proposition at 3% than at 7%. It ignores property tax, which varies several-fold between states, along with insurance, maintenance, HOA dues, and PMI on a small down payment.
Most importantly it ignores how long you’ll stay, which usually swamps everything else. Buying and selling together commonly cost 8–12% of a home’s value, and a short stay never earns that back. A market with an attractive ratio still favours renting if you’re leaving in two years.
So use the ratio the way it’s useful: as a fast screen that tells you whether a market is expensive relative to renting, and therefore how carefully to run the real numbers. The rent vs. buy calculator does the rest — full carrying costs, equity, appreciation, selling costs, the return a renter would earn on the same cash, and your break-even year.
Calculator FAQ
How do you calculate the price-to-rent ratio?
Divide the home price by a full year of rent for a comparable property. A $360,000 home against $2,000/mo is 360,000 ÷ 24,000 = 15. The result is effectively how many years of rent the purchase price represents.
Does a low ratio mean I should buy?
Not on its own. A low ratio in a market with high mortgage rates and high property taxes can still favour renting over a short horizon. The ratio narrows the question; it doesn’t answer it.
Why annual rent rather than monthly?
Annualising makes the number a meaningful unit — years of rent. Dividing by monthly rent gives a figure in the hundreds that’s harder to reason about and doesn’t match the conventional bands.
How is this different from a rent vs. buy analysis?
This is a two-input screen. A full rent vs. buy analysis models both paths over a chosen number of years — mortgage interest, tax, insurance, maintenance, HOA, PMI, equity, appreciation, selling costs, and the investment return a renter would earn — and reports a break-even year. The ratio says whether a market is expensive; the full analysis says what it would cost you.
Also see: Rent vs. buy calculator · Rent affordability calculator · Mortgage payoff calculator