# How do I calculate the speed of the interface link in OpManager's business view?

The interface link's speed is the average of InSpeed and OutSpeed of the interface.

i.e,

**Speed = (InSpeed + OutSpeed) / 2**

*For Example,*

*If InSpeed = 200 Mbps; OutSpeed = 300 Mbps;*

*Then, Speed = (InSpeed + OutSpeed) / 2 = (200 + 300) / 2 = 500 / 2 = 250 Mbps.*

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