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Calcimator

VPN Throughput Calculator

Calculate effective VPN bandwidth with encryption overhead by protocol. Compare IPsec, WireGuard, and OpenVPN performance.

Inputs

Mbps
bytes
Mbps

Results

Effective VPN Throughput

951.3 Mbps

Per-Tunnel Bandwidth

19.03 Mbps

Link-Limited Throughput951.3 Mbps
CPU-Limited Throughput1,400 Mbps
Effective MTU1,427 bytes
Encryption Overhead4.9 %
Packets per Second79,278
CPU Bottleneck (1=Yes)0
How to Use This Calculator
  1. Enter Link Bandwidth, VPN Protocol, and Interface MTU.
  2. Set Concurrent VPN Tunnels and Firewall VPN Rating.
  3. Review Effective VPN Throughput (Mbps) and Per-Tunnel Bandwidth (Mbps).
  4. Use Link-Limited Throughput (Mbps) and CPU-Limited Throughput (Mbps) to inform your decision.
  5. Use the chart to visualize the results and explore different scenarios by adjusting inputs.
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Formula

Effective BW = min(Link × Payload/MTU, Firewall × CPU Factor)

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