电钻是机械工业、建筑工业和装修行业常用的钻孔、打螺丝钉、起螺丝钉的工具。十九世纪奥地利人Arthur James Arnot和William Blanch Brain将电动机和钻子合装在一起，发明了最早的电钻。1889年澳洲墨尔本，Wilhelm Fein 发明便携式电钻。1917年, 德国人Black & Decker 发明带手枪把和扳机的电钻。这种带扳机的电钻，持续到今日。

今日的电钻，多数带可充电池，以锂离子电池主。电钻一般都有扭力调控环，最大的扭力在400磅左右。也有高低速度档，当电钻用时，使用高速档，当电动螺丝起子打螺丝钉时，用低速档。电钻上的倒退档，可用来起出螺丝钉。有些电钻带LED前照明灯，按扳机时，照明灯点燃，照明前方的工作点，十分方便。

A drill is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for boring holes in various materials or fastening various materials together with the use of fasteners. The attachment is gripped by a chuck at one end of the drill and rotated while pressed against the target material. The tip, and sometimes edges, of the cutting tool does the work of cutting into the target material. This may be slicing off thin shavings (twist drills or auger bits), grinding off small particles (oil drilling), crushing and removing pieces of the workpiece (SDS masonry drill), countersinking, counterboring, or other operations.