What’s Your Customer Success Manager Capacity? Use our customer success calculator to find out how many CSMs you need to maintain the workload — and health — of your current accounts. Customer Success How many hours a month does a CSM devote to customer-focused work? 128 hours is best practice. On average how many overall hours per month are spent on one client? How many customers do you currently have? How many Customer Success Managers (CSMs) do you currently have? Calculations Total number of CSMS additional CMS Customers per CSM If you are human, leave this field blank. Calculate Go Back