📅 Move in · move out
Prorated Rent Calculator
Work out the rent for part of a month when you move in or out mid-month, and see what each of the three common methods would charge.
Prorate your rent
What do you need?
You pay from this day to the end of the month, both days included.
Your lease says which one applies. The results compare all three.
Prorated rent
All three methods
| Method | Daily rate | Rent |
|---|
Month by month
| Month | Days | Rent |
|---|
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How prorated rent is calculated
Prorated rent is the rent for the days you actually have the place. You find a daily rate, then multiply it by the number of days. The three common ways to get the daily rate give slightly different answers:
- Days in that month: monthly rent ÷ the number of days in that month (28 to 31). A day in February costs more than a day in January.
- 365-day year: monthly rent × 12 ÷ 365, the same daily rate all year.
- 30-day month: monthly rent ÷ 30, as if every month had 30 days. A partial month never costs more than a full month's rent.
Here's a $1,500 rent with a move-in on January 20, 2027. You pay for January 20 to 31: 12 days.
| Method | Daily rate | 12 days |
|---|---|---|
| Days in that month | $48.39 | $580.65 |
| 365-day year | $49.32 | $591.78 |
| 30-day month | $50.00 | $600.00 |
The gap is $19.35 here. It's bigger in February: moving out on February 10, 2027 costs $535.71 by days in the month, $493.15 with a 365-day year and $500.00 with a 30-day month.
Before you pay
- Check your lease. It should say how a partial month is charged. If it doesn't, ask your landlord which method they use, and compare it with the table above.
- Count the days the same way. This calculator includes both your first and your last day. If your rent starts the day after you get the keys, use that day instead.
- Moving in on the 1st means a full month at the normal rent, and so does moving out on the last day of a month.
- Moving in late in the month? Some landlords collect the prorated amount together with the next full month's rent, so plan for both.
Splitting the place with roommates? Use the rent split calculator to work out everyone's share, then prorate it here.
Frequently asked questions
How do you calculate prorated rent?
Divide the monthly rent by the number of days in that month to get a daily rate, then multiply by the days you have the place. Some leases use a 365-day year or a 30-day month for the daily rate instead.
Is the move-in day included?
In this calculator, yes: both the first and the last day count. Moving in on January 20 means paying for January 20 to 31, which is 12 days.
Why do prorated rent calculators give different answers?
They use different daily rates. Dividing by the days in the month, by 30, or using a 365-day year can differ by a few dollars, more in February. The results table shows all three.
Does the calculator save my information?
No. It runs in your browser, and nothing you enter is stored or sent anywhere.