何なん度ど

な

ん

ど

Meanings

Used to ask about the number of occurrences or repetitions. Can also be used adverbially without a particle.

how many degrees

Used to ask about temperature, angles, or other degree-based measurements.

〈事こと〉は何なん度ど目めですかasking what number occurrence something is (e.g. the nth time)
この映えい画がを見みるのは何なん度ど目めですか。
How many times have you watched this movie now?
〈場ば所しょ〉は何なん度どありますかasking the temperature at a place
今日きょうの最さい高こう気き温おんは何なん度どありますか。
What is today's high temperature?
何なん度ど〈動どう詞し〉てもno matter how many times one does something
何なん度ど説せつ明めいしても彼かれは理り解かいしない。
No matter how many times I explain it, he doesn't understand.

何なん回かいN5sense 1
何回 asks 'how many times' using the explicit counter 回, while 何度 uses 度 and can also work adverbially without any particle.
幾いく度どN1sense 1
幾度 is a literary, old-fashioned way of asking or saying 'how many times,' whereas 何度 is the everyday word used in speech and writing.
何なん遍べんN1
何度 can ask about frequency or degree (like temperature), whereas 何遍 only counts occurrences.

今こん度どN5
今度 shares the kanji 度 with 何度 but means 'this time/next time,' not 'how many times.'

Compound of 何 (nan, 'what') and 度 (do, 'degree; time').