A:Answer I measured 21 1/2” wide x 17 1/8” deep x 12 1/2 Tall. You will have to have a little more than the 17 1/8 deep because of the plug in the back but that’s the closest I could get as a measurement on my oven. BTW, I Highly recommend this toaster oven! It’s GREAT!! It fits so many different dishes and, so far, has been the Best toaster oven we’ve ever had. I use it Every Single Day.