Forecasting Call Volumes and AHT

© drawlab19 - Adobe Stock - 233026662
Forecasting Call Volumes and AHT
Any one can help me with forecasting tools for forecasting call volumes and AHT.
I am tired of using the Excel sheet.
Question asked by mitesh
Workforce Management (WFM) Solution
It sounds like you need a Workforce Management (WFM) solution. It would probably be worth having a look at our Workforce Management Guide. With thanks to JontyErlang
It is probably based on our Excel Erlang calculator. With thanks to JontyWFM Tool
All, if you have a standard contact centre with a very reliable call arrival profile, with easily predicted seasonality then a WFM tool could work for you. I have not yet seen a WFM that can handle anything (forecast wise) beyond the basic. I have used some of the biggest tools out there in my time, and I have always come back to Excel - there is nothing else that you can configure to your EXACT requirements, to deal with all of the nuances of your demand. WFM tools cannot be beaten for scheduling and exception management (in larger contact centres), but I would suggest a capital outlay of this magnitude just for forecasting is unwise. Analyse your true demand and do not attempt to overcomplicate your model (spurious accuracy), and don't give up on Excel just yet. With thanks to mark2pFormula
=((L51*M51))/(3600*37.5*$Q$2) I use a spread sheet that times calls by AHT then divides total opening time by a FTE and occupancy l51 is total calls m is AHT 3600 is opening time 37.5 is full time agent $Q$2 is occupancy 75% for us at the moment With thanks to zoidzMore Information
Zoidz - That formula is correct although: 1. there is an extra set of brackets on the first part doing nothing. (Or two depending how you look at it) 2. That figure won't have much meaningful value. All it tells you is how many calls an agent could handle if they took calls back to back throughout the whole day. It won't do you much good for forecasting as calls don't come in that way. Erlang should really figure in some where. Also have you excluded breaks from your occupancy, as 75% looks a little high? With thanks to KevinPAlternatives
I also use an excel for forecasting call volume and AHT at one of my jobs but at the other I use Vicidial, an open source CRM software that those a lot for me. With thanks to mirelpopescuError
the formula is incorrect as there is no shrinkage (offline time) included in the same. With thanks to miteshExcel Calculator
This is the best spreadsheet to use With thanks to JontyWhy FTE Requirement is so Much Higher
Can someone enlighten me why FTE requirement is so much higher when running in the month of Feb than any other months with the same parameters? How does it impact the fact that Feb has only 28 days compared to a 30 or 31 days in other months? With thanks to girlieMonth Should Not Make a Difference
The month should not make difference on Erlang Calculations as you base it on the calls in one hour. With thanks to JontyAuthor: Jonty Pearce
Published On: 12th Apr 2022 - Last modified: 11th Aug 2025
Read more about - Call Centre Questions, Average Handling Time (AHT), Call Centre Answers, Full Time Equivalent (FTE)