Deleting KWs that dont convert

Is there a tool for this

[holyearth]

Is there an easy way to mass delete keywords within an adgroup that have a cost/conv less than x or a conversion quantity less than x within a specified time range?

[netmeg]

Use the AdWords Editor?

[nakita_dog]

AdWords Editor is definitely the way to go for this task but you can do this in your AdWords account for a particular ad group.

Just go into the ad group where your keywords are located and click on the "Search this list" link on the keyword tab. There you can search for keywords that received a conversion rate of zero.

But AdWords Editor is way better at this.