Semi-Monthly Pay Calculator

Created by Luis Hoyos
Reviewed by Davide Borchia
Based on research by
Baye, M. Managerial Economics and Business Strategy (2009)
Last updated: Jun 05, 2023

With this semi-monthly pay calculator, you can know what is the semi-monthly pay equivalent to any other period. Input the wage you know (hourly, daily, weekly, monthly, or yearly), and the tool will provide the wage corresponding to the semi-monthly pay period. The calculator assumes a working schedule of 40 hours and five days a week, but you can change it.

Keep reading this article to know what semi-monthly pay means and how to calculate it.

What does semi-monthly pay mean?

Semi-monthly pay is a salary or wage paid twice a month, usually on the 15th and last day but also on the first and 15th day. If one payment date falls on a weekend or holiday, the payment occurs the previous or following business day. Usually, the businesses choose the previous day (Friday or, failing that, Thursday).

As a month contains two of these payments, there are 24 semi-monthly payments per year. Semi-monthly pay usually is confused with biweekly pay, which occurs every two weeks and, therefore, 26 times yearly (you can obtain it with the biweekly pay calculator)

The formula for semi-monthly pay calculation

To better understand what semi-monthly pay means, calculating it is essential. Depending on the available information, there'll be different ways to calculate the semi-monthly pay:

  • Using the monthly wage: As there are two semi-monthly payments during the month, you can obtain their value by dividing the overall monthly salary by 2:

    Semi-monthly wage = (Monthly wage)/2

  • Using yearly wage: There are 24 semi-monthly pay periods during a year. Therefore, we can calculate the semi-monthly pay by dividing the annual salary by 24:

    Semi-monthly wage = (Yearly wage)/24

  • Using weekly wage: As a year has 52 weeks, we can replace the yearly wage with 52 times the weekly pay and calculate the semi-monthly salary as follows:

    Semi-monthly wage = (52 × Weekly wage)/24

  • Using daily wage: Similarly, we can replace the weekly wage with the daily wage times the number of working days per week:

    Semi-monthly wage = (52 × Daily wage × Days per week)/24

  • Using the hourly wage: We can also express the weekly wage as the hours per week times the hourly wage:

    Semi-monthly wage = (52 × Hourly wage × Hours per week)/24

🙋 The calculator assumes five days and 40 hours per week (the most common schedule), but you can change this parameter.


How many semi-monthly pay periods are in a year?

There are 24 semi-monthly pay periods in a year, as each of the twelve months contains two semi-monthly payments. This is slightly different from biweekly payments, which occur 26 times yearly.

What is the semi-monthly pay schedule for 2023?

If we use the 15th and last days of the month, the 2023 semi-monthly pay schedule is as follows:

Pay number

Pay date


January 14


January 31


February 15


February 28


March 15


March 31


April 14


April 28


May 15


May 31


June 15


June 30


July 14


July 31


August 15


August 31


September 15


September 29


October 13


October 31


November 15


November 30


December 15


December 29

The previous schedule chose Friday when the payment was originally on the weekend. If one of the days corresponds to a holiday celebrated in your target region, you can anticipate or delay the payment date to the previous or following weekday.

Luis Hoyos
Input any of the wages below to obtain the answer
Hourly wage
Daily wage
Weekly wage
Monthly wage
Yearly wage
Hours per week
Days per week
Semi-monthly wage
Check out 42 similar tax and salary calculators 🧾
AGIAlabama taxAlternative minimum tax… 39 more
People also viewed…

Break even

Break-even calculator shows you how much revenue your business needs to make in order to cover all costs.

Days payable outstanding (DPO)

Our DPO calculator allows you to calculate how long it takes for a company to pay its bills.


Do you feel like you could be doing something more productive or educational while on a bus? Or while cleaning the house? Well, why don't you dive into the rich world of podcasts! With this podcast calculator, we'll work out just how many great interviews or fascinating stories you can go through by reclaiming your 'dead time'!

Social Media Time Alternatives

Check what you could have accomplished if you get out of your social media bubble.
Copyright by Omni Calculator sp. z o.o.
Privacy policy & cookies
main background