Network calculator
Bandwidth Calculator
Estimate required network bandwidth from users, per-user usage, and overhead.
Formula
Bandwidth requirement
Required bandwidth = users x Mbps per user x (1 + overhead)
25 users at 5 Mbps each with 20% overhead needs about 150 Mbps.
FAQs
What is overhead?+
A buffer for protocol overhead, peak usage, retransmits, and headroom.
Should I use average or peak users?+
Use expected simultaneous active users for capacity planning.
How does the Bandwidth Calculator calculate the result?+
It uses the Bandwidth requirement: Required bandwidth = users x Mbps per user x (1 + overhead). 25 users at 5 Mbps each with 20% overhead needs about 150 Mbps.
What information do I need to use the Bandwidth Calculator?+
Estimate required network bandwidth from users, per-user usage, and overhead.
How accurate is the Bandwidth Calculator?+
Bandwidth Calculator applies the formula and assumptions shown on this page. Results may be rounded for readability, so verify changing rates, thresholds, medical guidance, or legal rules with the cited source or a qualified professional.
What should I check before using the Bandwidth Calculator result?+
Check that the units, dates, rates, and assumptions match your situation. Change one input at a time to understand which values have the largest effect on the result.
Network guide
How to use the Bandwidth Calculator
Estimate required network bandwidth from users, per-user usage, and overhead. The page also explains the bandwidth requirement and shows a practical example: 25 users at 5 Mbps each with 20% overhead needs about 150 Mbps.
- 1
Enter your details
Enter users, per-user usage, and overhead, then complete any other fields shown in the calculator.
- 2
Check the calculation
Review the result alongside the bandwidth requirement: Required bandwidth = users x Mbps per user x (1 + overhead).
- 3
Compare scenarios
Change one or more inputs to see how they affect the bandwidth Calculator result before you use the estimate.
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