How do you say congratulations on your new grandchild in Hebrew?

Answer 1

for a male baby: yevarekhekha hashem et ha tinok hekhadash

for a female baby: yevarekhekh hashem et ha tinoket hakhadashah

(the kh is a gutteral sound. If you pronounce it like a k, the phrase will become gibberish.)

Answer 2

If it's a grandson: Mazal Tov al hanekhed hachadash! (!מזל טוב על הנכד החדש)

If it's a granddaughter: Mazal Tov al hanekhdah hachadashah! (!מזל טוב על הנכדה החדשה)

Answer 3

yevarech hashem et kulam (יברך ה׳ את כולם)