Estimate how much usable speed and ping you may lose before you connect the VPN.
Estimated VPN Speed Loss
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Enter your base line speed and VPN assumptions to estimate usable speed after overhead.
Tap an example to prefill the calculator with sample values.
WireGuard regional server
250 Mbps line on a modern device
A practical case where the protocol is efficient and the server is not too far away.
Result: The line should still be more than fast enough for 4K streaming and general browsing.
OpenVPN on older hardware
Bigger overhead from protocol and device CPU limits
This catches the common case where the VPN protocol and hardware both compress usable throughput.
Result: Overhead compounds quickly once the protocol and hardware are both less efficient.
Far-away server route
Strong base line, but long geographic route
Useful when unblocking a far library or region-specific service is the reason for the VPN session.
Result: Distance can dominate the latency side even when the raw line speed is good.
Gaming VPN — FPS competitive
30ms base ping, WireGuard local, FPS game
Tests whether a VPN is viable for competitive FPS play where ping sensitivity is highest.
Result: WireGuard on a local server typically stays under 50ms — acceptable for competitive FPS with DDoS protection.