The word(s) "weight" appears 18 time(s) in 18 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) "O my son!" (said Luqman), "If there be (but) the weight of a mustard-seed and it were (hidden) in a rock, or (anywhere) in the heavens or on earth, Allah will bring it forth: for Allah understands the finest mysteries, (and) is well-acquainted (with them).

(12) Say: "Call upon other (gods) whom ye fancy, besides Allah: They have no power,- not the weight of an atom,- in the heavens or on earth: No (sort of) share have they therein, nor is any of them a helper to Allah.

(13) And those that lift and bear away heavy weights;

(14) So establish weight with justice and fall not short in the balance.

(15) Soon shall We send down to thee a weighty Message.

(16) But when they have to give by measure or weight to men, give less than due.

(17) Then shall anyone who has done an atom's weight of good, see it!

(18) And anyone who has done an atom's weight of evil, shall see it.