2 Samuel 14:26

26And when he cut the hair of his head (for at the end of every year he used to cut it; when it was heavy on him, he acut it), he weighed the hair of his head, two hundred shekels
A  shekel was about 2/5 ounce or 11 grams
by the king’s weight.

Acts 18:18

Paul Returns to Antioch

18After this, Paul stayed many days longer and then took leave of cthe brothers
Or  brothers and sisters; also verse 27
and set sail for Syria, and with him ePriscilla and Aquila. At fCenchreae ghe had cut his hair, for he was under a vow.
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