For values marked with an asterisk, the SRD directly gives neither this value nor a means to determine it.
A whip deals nonlethal damage. It deals no damage to any creature with an armor bonus of +1 or higher or a natural armor bonus of +3 or higher. The whip is treated as a melee weapon with 15-foot reach, though you don’t threaten the area into which you can make an attack. In addition, unlike most other weapons with reach, you can use it against foes anywhere within your reach (including adjacent foes).
This is part of the Revised (v.3.5) System Reference Document. It is covered by the Open Game License v1.0a, rather than the Creative Commons Attribution Sharealike License. To distinguish it, these items will have this notice. If you see any page that contains SRD material and does not show this license statement, please contact an admin so that this license statement can be added. It is our intent to work within this license in good faith.