Tool Time was the fictitious handyman show-within-a-show in the television sitcom, Home Improvement. It was hosted by Tim "The Toolman" Taylor (played by Tim Allen) and Al Borland (played by Richard Karn). The sponsor of Tool Time was Binford Tools, a fictitious tool manufacturing company.

Part of the show's attraction was its token "Tool Time girl", whose primary roles were to look good, be curvaceous, roll out various props and help introduce the two hosts. In the first few seasons, Pamela Anderson played Tool Time girl Lisa. When Pamela left the show, Debbe Dunning stepped in as her replacement, Heidi, who stayed until the show's cancellation.

During Tool Time, the hosts would teach audiences about home repair and renovations. However, Tim was more inclined to joke around, especially about Al's overweight mother and his affinity for wearing flannel shirts. Al would attempt to continue the show in a proper manner. Invariably, whenever Al was about to demonstrate the use of a particular machine, Tim would bring out his own version of the same machine that had been rewired for more power. The new machine would then backfire and cause the accidents that Tim became infamous for. Sometimes, the accidents were not caused by overpowered machines but by Tim's negligence for safety precautions.

Tim often mentioned his current off-screen problems during the show. If he had an argument with his wife Jill (Patricia Richardson), he would find an excuse to bring up the subject of the argument on Tool Time even if it had nothing to do with home improvement, much to Al's chagrin. In many episodes of the show, he also used this time to apologize to Jill in a subtle way.

The audience for Tool Time was the actual live studio audience for Home Improvement.