אור החיים הקדוש

The Ohr HaChaim HaKadosh — Gematria & Torah Learning

Rabbi Chaim ibn Attar zt״l (1696–1743), whose commentary on the Five Books of Moses is learned around the world. This gematria app is built in his honor, with tools to learn his Torah and the Hebrew letters he taught through.

His life His teachings

Title page of the first edition of Ohr HaChaim, printed in Venice in his lifetime

Gematria calculator

Type Hebrew letters to get their numerical value, or a number to see it in Hebrew — with several notation options.

Open the calculator

Learning tools

Aleph to Tav

Letters, vowels and pronunciation.

Weekly calendar

Plan and track your Ohr HaChaim, Torah and gematria learning.

Teachings

Passages checked against the original text.

Verse finder & flashcards

Open any verse and learn his recurring phrases.

Study helper

Ask about a passage in simple terms.

Five-volume set of Ohr HaChaim HaMevoar — Ohr HaChaim HaMevoar, five volumes

Synagogue associated with the Ohr HaChaim in Jerusalem — Synagogue associated with the Ohr HaChaim, Jerusalem

Handwriting and signature attributed to the Ohr HaChaim — Handwriting attributed to the Ohr HaChaim