Calculate bandwidth requirements based on user count, device types, application demands, and growth projections.
Underestimating bandwidth requirements leads to poor network performance and frustrated staff. This worksheet helps UK businesses calculate their actual bandwidth needs based on user counts, device types, application demands, and projected growth. It provides a structured approach to capacity planning that accounts for cloud applications, video conferencing, VoIP, and other bandwidth-intensive services that modern businesses rely on.
IT managers and network planners at growing UK businesses who need to ensure their network infrastructure can support current demands and planned growth.
A rough guide for UK SMEs is 5-10 Mbps per user for general cloud application and email use, rising significantly if video conferencing, VoIP, or large file transfers are common. A 20-person office running video calls throughout the day often needs a business connection of at least 100-200 Mbps to avoid contention issues.
Start by listing each application in use, its typical bandwidth consumption per user, and how many users run it concurrently during peak hours, then add a contention buffer of 20-30% for growth and simultaneous usage spikes. This worksheet provides a structured calculation covering common business applications and growth projections.
Video conferencing typically needs 1.5-4 Mbps per active call depending on resolution, while VoIP calls need roughly 100 Kbps each. A UK office running several concurrent video calls alongside general internet use should budget for a business-grade connection well above consumer broadband speeds to avoid quality drops.
Capacity planning should project bandwidth needs 1-3 years ahead based on expected headcount growth, planned application rollouts, and increasing reliance on cloud services, rather than sizing only for current usage. This worksheet includes growth projection calculations so ISP circuit upgrades can be planned before performance actually degrades.
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