Is a 2mg klonopin about the same strength as 2mg xanax (alprazolam) bar?

slightly different: Both meds are in the class of benzodiazepines. Klonopin has a longer 1/2 life than xanax (alprazolam). One dose of 0.5mg of Klonopin is roughly equivalent to 0.25mg of xanax (alprazolam).

no.: Klonopin and xanax are two related, but different medications. Klonopin is clonazepam, a long lasting medicine. Xanax is alprazolam, a fairly short acting medicine for anxiety. Klonopin is generally considered about twice as potent as xanax. You need to have your medication choice and dosage carefully evaluated and monitored by your treating physician, and consult with him or her about this.