Enter a month and year, and the tool tells you exactly how many days are in it, correctly accounting for leap-year February.
February has 28 days in common years and 29 days in leap years. This tool checks the leap-year rule automatically for the year you enter.
January, March, May, July, August, October and December each have 31 days. April, June, September and November have 30.
Daily rates, prorated rent and interest calculations depend on the exact number of days in the month, which varies through the year.