The name Gadi in Hebrew letters is גדי. Below: how its number adds up, which page of the Torah it falls on and what verse stands there. Everything is computed, nothing is guessed.
גדי
In short
Your name in Hebrew letters is גדי. A Tanakh name: the name of an Israelite (first in 2 Kings 15:14; 2 mentions in the Tanakh). Adding up the numbers of its letters gives 17 — the same as the Torah word טוב, “good”. That number points to Torah page 17 of 354 — in the portion Noach. What that portion is about: The flood and the ark; the rainbow as a sign of the covenant; the tower of Babel; ten generations from Noah to Abraham. The verse that begins with the first letter of your name and ends with the last is Genesis 23:4. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Gadi” — this exact spelling is what was calculated: גדי. A name from the Tanakh — its Tanakh spelling is used. If your name is spelled differently, correct the Hebrew spelling and the report is recomputed.
Adding up the letters of the name גדי gives 17.
17
The number 17 is the Torah word טוב — «good» (Genesis 1:4).
And Nahor lived after he begot Terah a hundred and nineteen years, and begot sons and daughters.
This is from the portion Noach. What it is about: The flood and the ark; the rainbow as a sign of the covenant; the tower of Babel; ten generations from Noah to Abraham.
Other ways of counting
The tradition counts the same name in several ways. The main one is above: each letter is its number. The other eight are old and checkable too; each gives its own number, and many of them have a Torah word with the same number.
with finals and ordinal — 17. A Torah word with the same number is טוב — “good” (Genesis 1:4).
Reduced, each letter to one digit (mispar katan) — 8. A Torah word with the same number is אהב — “to love” (Genesis 22:2).
Cumulative: a letter plus all letters before it (mispar kidmi) — 71. A Torah word with the same number is מלא — “to fill” (Genesis 1:22).
Squares of the letter values (mispar perati) — 125. A Torah word with the same number is ענה — “to answer, afflict” (Genesis 18:27).
Building: the sum grows with each letter (mispar bone’eh) — 27. A Torah word with the same number is בכה — “to weep” (Genesis 21:16).
The letters that come out are רקמ — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 340. A Torah word with the same number is שם — “there” (Genesis 2:8).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 537. A Torah word with the same number is מטבעתיו — “by its rings” (Exodus 28:28).
The number 17 appears in the classical books 52 times across 29 works. The earliest mention is ילקוט שמעוני (~1260).
Every letter of the name explained, the words and namesakes with references, the Hebrew date, the letter and tribe of the month, day 861 of your life (±1), the psalm by age, the attestations from the classical books — a PDF sent to your email.
The number of the day, every morning
Every date has a number too. Once a year it will match the number of your name — 17. The channel posts one number a day, one verse and the Torah page it lands on. Nothing after it, no mailing list.
Hebrew is written from right to left. גדי has 3 letters: ג Gimel, ד Dalet, י Yod. The first letter is Gimel, the last is Yod.
For an engraving, a sign or a tattoo, show the spelling to someone who reads Hebrew: transliterating a name is a choice, not the only option.
The name גדי appears in the Torah as a word 6 times. The first time is Genesis 38:17. Another 6 times it stands with prefixes — “and”, “in”, “the”.
The verse of your name
There is a custom: at the end of the prayer one says a Torah verse that begins with the first letter of one's name and ends with its last. For גדי these are ג and י. The Pentateuch has 2 such verses. The first of them is Genesis 23:4:
This is from the portion Chayei Sarah. What it is about: Sarah's death and the purchase of the cave of Machpelah; the servant seeks a wife for Isaac; Rebecca at the well; Abraham's death.
Each Hebrew letter has a number; a word's number is their sum (alef 1 … tav 400). The page is the remainder modulo 354: the Torah divided into 354 pages of 861 letters, as the lunar year has 354 days. Everything can be checked by hand.