per Hour
per Day
per Week
per Bi-weekly (2 weeks)
per Semi-monthly (2x month)
per Month
per Year
Calculation Results
Frequency
Pay Rate
Hourly Rate
Daily Rate (based on weekly avg)
Weekly Pay
Bi-weekly (Every 2 weeks)
Semi-monthly (24 checks/yr)
Monthly Pay
Annual Salary
How to Use the Pay Rates Calculator
Whether you are negotiating a new job offer or looking to see how much your hourly raise impacts your annual income, this calculator provides a comprehensive breakdown of your earnings. This tool accounts for work hours per week and total work weeks per year to ensure high accuracy.
Common Pay Period Definitions
Bi-weekly: Payments are made every two weeks, resulting in 26 pay periods per year.
Semi-monthly: Payments are made twice per month (usually the 1st and 15th), resulting in 24 pay periods per year.
Monthly: Payments are made once per month, resulting in 12 pay periods per year.
Annual: The total gross amount earned over the course of the full year.
Why Pay Frequency Matters
Choosing between a bi-weekly and a semi-monthly pay schedule can impact your monthly budgeting. While the annual total remains the same, bi-weekly schedules result in two "extra" paychecks during the year because 26 paychecks divided by 12 months isn't an even number. This calculator helps you visualize exactly what lands in your bank account during each specific period.
Example Calculations
If you earn $30 per hour and work a standard 40-hour week for 52 weeks a year:
Weekly: $1,200 ($30 x 40)
Bi-weekly: $2,400 ($1,200 x 2)
Monthly: $5,200 ($62,400 / 12)
Annual: $62,400 ($1,200 x 52)
Note: These calculations represent Gross Pay before taxes, insurance, and other deductions are taken out of your paycheck.
function calculatePayRates() {
var amount = parseFloat(document.getElementById("payAmount").value);
var freq = document.getElementById("payFrequency").value;
var hpw = parseFloat(document.getElementById("hoursPerWeek").value);
var wpy = parseFloat(document.getElementById("weeksPerYear").value);
if (isNaN(amount) || isNaN(hpw) || isNaN(wpy) || amount <= 0 || hpw <= 0 || wpy <= 0) {
alert("Please enter valid positive numbers for all fields.");
return;
}
var annualSalary = 0;
// Normalize to Annual Salary first
if (freq === "hourly") {
annualSalary = amount * hpw * wpy;
} else if (freq === "daily") {
// Assuming daily means (hours per week / 5 days) usually, but we use the total week logic
annualSalary = (amount * (wpy / 52 * 5)) * 52; // Simplified
// Re-calculating daily based on a 5 day week for better accuracy if user provides "daily"
annualSalary = amount * 5 * wpy;
} else if (freq === "weekly") {
annualSalary = amount * wpy;
} else if (freq === "biweekly") {
annualSalary = amount * (wpy / 2);
} else if (freq === "semimonthly") {
annualSalary = amount * 24;
} else if (freq === "monthly") {
annualSalary = amount * 12;
} else if (freq === "annually") {
annualSalary = amount;
}
// Calculate all intervals based on the normalized Annual Salary
var hRate = annualSalary / (hpw * wpy);
var wRate = annualSalary / wpy;
var bwRate = annualSalary / (wpy / 2);
var smRate = annualSalary / 24;
var mRate = annualSalary / 12;
var dRate = wRate / 5; // Standard 5-day work week for daily display
// Helper for formatting
function fmt(num) {
return "$" + num.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
}
// Update DOM
document.getElementById("resHourly").innerText = fmt(hRate);
document.getElementById("resDaily").innerText = fmt(dRate);
document.getElementById("resWeekly").innerText = fmt(wRate);
document.getElementById("resBiweekly").innerText = fmt(bwRate);
document.getElementById("resSemimonthly").innerText = fmt(smRate);
document.getElementById("resMonthly").innerText = fmt(mRate);
document.getElementById("resAnnual").innerText = fmt(annualSalary);
// Show results
document.getElementById("resultArea").style.display = "block";
// Smooth scroll to results
document.getElementById("resultArea").scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}