The name Rosemary in Hebrew letters is רוזמרי. 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.
רוזמרי
In short
Your name in Hebrew letters is רוזמרי. The name is the English word for the plant rosemary, from Latin “ros marinus”, “dew of the sea”. It has been used as a first name since the 19th century. This form of the name is used in English-speaking countries. In Hebrew it is written by sound. Adding up the numbers of its letters gives 463. That number points to Torah page 109 of 354 — in the portion Bo. What that portion is about: Locusts, darkness and the death of the firstborn; the Passover lamb; the exodus from Egypt; the commandment of tefillin. The verse that begins with the first letter of your name and ends with the last is Exodus 16:29. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Rosemary” — this exact spelling is what was calculated: רוזמרי. 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 רוזמרי gives 463.
they saw not one another, neither rose any from his place for three days; but all the children of Israel had light in their dwellings.
This is from the portion Bo. What it is about: Locusts, darkness and the death of the firstborn; the Passover lamb; the exodus from Egypt; the commandment of tefillin.
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) — 463.
Reduced, each letter to one digit (mispar katan) — 22. A Torah word with the same number is יחד — “together” (Genesis 13:6).
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 76. A Torah word with the same number is עבד — “servant” (Genesis 9:25).
Cumulative: a letter plus all letters before it (mispar kidmi) — 1839.
Squares of the letter values (mispar perati) — 81785.
Building: the sum grows with each letter (mispar bone’eh) — 1788.
The letters that come out are גפעיגמ — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 206. A Torah word with the same number is דבר — “to speak” (Genesis 8:15).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 1199.
The number 463 appears in the classical books 1 time across 1 work. The earliest mention is שער הפסוקים (~1573).
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 — 463. 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. רוזמרי has 6 letters: ר Resh, ו Vav, ז Zayin, מ Mem, ר Resh, י Yod. The first letter is Resh, 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 רוזמרי does not stand as a word in the Pentateuch — as with most names, including many Tanakh names from the later books.
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 רוזמרי these are ר and י. The Pentateuch has 2 such verses. The first of them is Exodus 16:29:
ראו כי ה׳ נתן לכם השבת על כן הוא נתן לכם ביום הששי לחם יומים שבו איש תחתיו אל יצא איש ממקמו ביום השביעי
This is from the portion Beshalach. What it is about: The parting of the sea and the song of Moses and Miriam; manna and quail; water from the rock; the war with Amalek.
Any name written in Hebrew letters is a number: רוזמרי = 463. And every date has a number of its own. There is a day in the year when the two coincide.
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.