This calculator helps you determine the fair rental amount for a partial month, often used when a tenant moves in or out mid-month.
function calculateProRataRent() {
var monthlyRent = parseFloat(document.getElementById("monthlyRent").value);
var daysInMonth = parseFloat(document.getElementById("daysInMonth").value);
var daysTenantRents = parseFloat(document.getElementById("daysTenantRents").value);
var resultElement = document.getElementById("result");
resultElement.innerHTML = ""; // Clear previous results
if (isNaN(monthlyRent) || isNaN(daysInMonth) || isNaN(daysTenantRents)) {
resultElement.innerHTML = "Please enter valid numbers for all fields.";
return;
}
if (daysInMonth <= 0) {
resultElement.innerHTML = "Days in month must be a positive number.";
return;
}
if (daysTenantRents daysInMonth) {
resultElement.innerHTML = "Days tenant rents cannot be more than the total days in the month.";
return;
}
// Formula: (Full Monthly Rent / Days in Month) * Days Tenant Rents
var dailyRent = monthlyRent / daysInMonth;
var proRataRent = dailyRent * daysTenantRents;
resultElement.innerHTML = "