Nikon MH-23 charger doesn't convert voltage?

I'm going to Europe with my camera (D60) and it uses the MH-23 charger. Everywhere online it says it says "120 - 240v" on the back, HOWEVER, mine doesn't!

On the back of mine it says INPUT: 120V ~ 60Hz
No mention of 240.

Additionally, on the cord it says US and 125V 7A.

So that means I need a big clunky voltage converter so it won't explode with the much higher European voltage?

Simply, yes. Camera chargers (like mobile phone chargers) tend to be voltage specific to the country/region in which they are sold and not adjustable. It might be better to get a charger specific to Europe, rather than a voltage adjuster - have a look here:- http://www.7dayshop.com/catalog/default.php?cPath=777.