Go measure it right now. I dare you. Grab a tape measure and be horrified.
You might discover your “standard” stove is actually 29.75 inches. That’s normal. Tolerance is a wild thing. Or you might find a weirdo 27-inch model from the 1970s.
Embrace the quirks. Stoves are dumb, hot boxes that we love and yell at. Their size is just one more reason to marvel at how weird home design really is.
Now go make a grilled cheese. Your 30-inch space is waiting. Don’t let the 20-inch rebels make you jealous. They can’t even fit a sheet pan without a prayer.