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Robert Hemsley
RHTool hub

Small tools for questions that come up every week.

Free to use, no sign-up. Built to give a fast first answer you can then confirm against current terms.

Windows Server Core Licensing Calculator

Work out how many core licences and 2-core packs a host needs, for Standard or Datacenter, including VM stacking.

  • Applies 8-core per processor and 16-core per server minimums
  • Rounds up to 2-core packs
  • Standard: one extra full set per 2 VMs
  • Datacenter: one set, unlimited VMs
Launch calculator

Microsoft Licensing Challenge

Six fresh questions every day across CSP, Azure, M365, Copilot, EA, and licensing fundamentals, with speed-based scoring and detailed explanations after every answer so you learn as you play.

microsoftlicensingchallenge.com

Take the challenge

Have an idea for a tool that would save you time? Suggest one.