The name Noa in Hebrew letters is נעה. 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.
נעה
In short
Your name in Hebrew letters is נעה. A Tanakh name: an Israelite woman (first in Numbers 26:33; 4 mentions in the Tanakh). Meaning, per Strong’s dictionary (1890): “movement”. Adding up the numbers of its letters gives 125 — the same as the Torah word ענה, “to answer, afflict”. That number points to Torah page 125 of 354 — in the portion Yitro. What that portion is about: Jethro's counsel on judges; standing at Sinai; the Ten Utterances; “you shall not make yourself an idol”. The verse that begins with the first letter of your name and ends with the last is Leviticus 22:8. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Noa” — this exact spelling is what was calculated: נעה. 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 נעה gives 125.
125
The number 125 is the Torah word ענה — «to answer, afflict» (Genesis 18:27).
And HaShem said unto Moses: 'Go down, charge the people, lest they break through unto HaShem to gaze, and many of them perish.
This is from the portion Yitro. What it is about: Jethro's counsel on judges; standing at Sinai; the Ten Utterances; “you shall not make yourself an idol”.
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.
Final letters as 500–900 (mispar gadol) — 125. A Torah word with the same number is ענה — “to answer, afflict” (Genesis 18:27).
Reduced, each letter to one digit (mispar katan) — 17. A Torah word with the same number is טוב — “good” (Genesis 1:4).
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 35. A Torah word with the same number is גבל — “to set bounds” (Exodus 19:12).
Cumulative: a letter plus all letters before it (mispar kidmi) — 535. A Torah word with the same number is כהנתכם — “your priesthood” (Numbers 18:1).
Squares of the letter values (mispar perati) — 7425.
Building: the sum grows with each letter (mispar bone’eh) — 295. A Torah word with the same number is יריעה — “curtain” (Exodus 26:1).
The letters that come out are טזצ — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 106. A Torah word with the same number is נון — “Nun, father of Joshua” (Exodus 33:11).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 242. A Torah word with the same number is אראלי — “Areli, son of Gad” (Genesis 46:16).
The number 125 appears in the classical books 10 times across 8 works. The earliest mention is ספר הפליאה (~1390).
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 — 125. 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. נעה has 3 letters: נ Nun, ע Ayin, ה He. The first letter is Nun, the last is He.
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 נעה appears in the Torah as a word 1 time. The first time is Numbers 26:33. Another 2 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 נעה these are נ and ה. The Pentateuch has exactly one such verse — Leviticus 22:8:
נבלה וטרפה לא יאכל לטמאה בה אני ה׳
This is from the portion Emor. What it is about: Laws of the priests; animals without blemish; the calendar of festivals — from the Sabbath to Sukkot; the lamp and the showbread.
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.