Sorry, I'll get measurements. Around 2.5 feet total I'd say for a good guesstimate. Not near as long as some I've seen for sure but it's definitely not a knife I'll check tomorrow for y'all.
I added some info about me Ken & I'm thankful you welcomed me here & hope someone will take good care & appreciate this old weapon. If I ever find a Nihonto detecting, I'll be sure to post it on here to see