Abjad in the Ottoman Empire: Uses and Examples

Walk down an old Istanbul street and stop in front of a fountain. On its marble face you will see a few lines of elegant calligraphy, ending in a single verse. You will rarely find a numeral there, yet the year the fountain was built is written on it. In an Ottoman city, walls, gates and gravestones tell their own dates, provided you hold the key to read them. That key is Abjad, known in Turkish as ebced.

A Culture Where Letters Were Numbers

Ottoman Turkish was written in Arabic script, and every letter of that script was also a number in the Abjad order: alif 1, ba 2, jim 3, dal 4… all the way to ghayn 1000. For a literate reader, any word could be read as a number if needed. This double reading turned Abjad from an ornament into part of everyday culture. Its main uses were:

• Chronograms (tarih düşürme): recording the year of an event in a verse or phrase whose letters add up to that year.
• Inscriptions: giving the year of construction or restoration in verse on mosques, fountains, tombs, bridges and caravanserais.
• Ordering and tables: numbering sections, items or table columns with letter-numerals in some manuscripts, and writing values in letters in calendars and astronomical tables.
• Names and custom: hiding the date of a birth, an accession or a death inside a name or phrase, and looking at the value of names.

Financial registers were a different world: the treasury used a special script and numeral system called siyakat. Abjad was above all the language of poetry, inscriptions and spiritual tradition.

When Walls Speak: Inscriptions

An inscription is a building's identity card. Who commissioned it, for whom, and when it was completed were usually carved into the stone. The year was often hidden in the last verse instead of being written as a plain number. That verse is frequently preceded by a signal word such as târîh ("date"), as if telling the reader: "now you may calculate." A fountain thus became a prayer, a poem and a calendar page at once.

The rules, styles and famous poets of chronograms are a subject of their own; here we focus on the logic and solve one example step by step.

Reading a Chronogram Step by Step: "Belde-i Tayyibe"

One of the most frequently quoted date phrases for the conquest of Istanbul is "Belde-i Tayyibe" (بلدة طيبة, "a good, pure land"). The expression also appears in the Qur'an (Saba 34:15). Let us calculate like an inscription reader:

1. Split the phrase into letters: بلدة = ب + ل + د + ة; طيبة = ط + ي + ب + ة.
2. Write down the values: ب 2, ل 30, د 4, ط 9, ي 10.
3. Settle the rule: in this chronogram the final ة (ta marbuta) is counted as an open ت (400), as it often was in Ottoman spelling.
4. First word: 2 + 30 + 4 + 400 = 436.
5. Second word: 9 + 10 + 2 + 400 = 421.
6. Total: 436 + 421 = 857.

857 is the year of the conquest in the Hijri calendar. A rough conversion formula is: Gregorian ≈ Hijri − (Hijri ÷ 33) + 622. 857 − 26 + 622 = 1453. Two words on a wall still give the same year centuries later.

Note: if you count the same ة as 5 (ha), the total becomes 67 and the date disappears. In chronograms, the spelling the poet had in mind is decisive. In the name calculations on our site, ة is counted as ha (5); the two practices serve different purposes. Seeing how one letter choice changes the result also explains why Abjad tradition insists so much on correct spelling.

How Are the Turkish Letters Counted?

For sounds that Arabic lacks, Ottoman Turkish used extra letters borrowed from Persian or created for its own needs. In Abjad these letters have no value of their own; they take the value of the base letter they were built on:

Examples: çeşme, "fountain" (چشمه) = 3 + 300 + 40 + 5 = 348; köprü, "bridge" (كوپرى) = 20 + 6 + 2 + 200 + 10 = 238; gül, "rose" (گل) = 20 + 30 = 50. With Turkish words the real difficulty is spelling, not values: Ottoman orthography did not always write the vowels, so the same word can appear in different spellings in different periods, and the total changes accordingly.

Names and Abjad

In Ottoman society a name was always considered together with its meaning. Giving a child a beautiful name and announcing it by whispering it into the baby's ear was a common custom. In some circles the Abjad value of the name was examined as well, or a phrase was sought that gave the year of birth. Hiding the year of death in a verse on a gravestone belongs to the same tradition: a life was remembered in letters where it began and where it ended.

This perspective still fascinates today. Which letters would your name contain if written in Ottoman script, what is its total, which letter dominates? In the tradition, a person's name is not read alone but together with the mother's name.

Quick Questions and Answers

Was every inscription dated with Abjad?

No. Many inscriptions give the year directly in numerals, and some contain both numerals and a chronogram. A chronogram verse, however, was regarded as a mark of mastery.

Does the sum always come out exactly?

Not always. Poets sometimes left hints that required adding or subtracting a number to complete the total. That is why an inscription has to be read letter by letter, patiently, looking at the stone itself.

Was Abjad just a game?

Partly a game of wit, yes, but it was also documentation. Historians still derive the dates of many buildings from these verses.

1928 and the Silent Walls

With the law adopted on 1 November 1928, Turkey switched to the Latin alphabet. In the Hijri calendar that date falls in the year 1347. Letters in the new alphabet carry no numerical value, so chronograms withdrew from everyday writing. Abjad lived on in religious culture, in calligraphy, and in the work of poetry lovers and researchers.

If today we stand before an old fountain and cannot read its last verse, it is not because the walls fell silent but because we lost the key. Learning Abjad makes the city's quiet language audible again. The same key can be applied to a shop sign or a company name: in the old bazaars, a tradesman's name and sign were also chosen with the intention of bringing abundance.

This article is for general information. In the tradition, Abjad interpretation is a field of reflection and commentary; it offers no certain outcome or guarantee.