Quipu
A quipu (also spelled khipu) is an Andean recordkeeping device made from knotted cords, best known for its use in the Inka Empire. Knot types and positions, cord colors and arrangement could encode numerical and administrative information; whether some quipus also recorded narratives remains an active subject of study.
Structure and materials
A quipu is a textile assemblage built around a main cord, from which pendant cords—and sometimes subsidiary cords—extend. Makers used cotton or fibers from camelids such as llamas and alpacas. Knots were tied in different forms and positions; the cords' colors, order, direction and construction could also carry information. The Quechua word khipu means “knot,” and both quipu and khipu are used in modern scholarship and museum catalogues.
Numbers and administration
In the Inka state, trained specialists used quipus to organize and communicate records across a large administrative system. Many surviving examples encode quantities using a decimal place-value arrangement: the position and form of knots on a cord help distinguish units, tens and higher powers of ten. Records could concern matters such as population counts, goods, tribute or obligations. Quipus were portable, physical records rather than written pages, and could be carried and consulted by officials.
Beyond numerical records
The numerical system of many quipus can be analyzed, but their full information system is not deciphered. Colonial-era accounts and some modern researchers suggest that quipus could also preserve or communicate historical, legal or narrative material. Scholars have not established a general method for reading such content, and the possible narrative capacity of the cords remains an open research question. It is therefore misleading to treat every quipu as either a simple calculator or a fully understood script.
Historical use and survival
Knotted-cord recordkeeping in the Andes predates the Inka Empire; museum scholarship associates earlier examples with cultures including the Wari and Tiwanaku. The Inka developed quipu use into a highly organized tool of imperial administration. Most quipus now held in collections date to the Inka period, conventionally placed around 1400–1532 CE. Spanish colonization and the destruction or loss of records left only a fraction of the original corpus. Today, museum catalogues and projects such as Harvard's Khipu Database document surviving examples so researchers can compare their cords and patterns.
Key facts
- Name
- Quipu, also spelled khipu, comes from the Quechua word for “knot.”
- Form
- A quipu is a cord-based record made from knotted main, pendant and sometimes subsidiary cords.
- Materials
- Quipus were made from cotton and animal fibers, including camelid fibers.
- Numerical system
- Many Inka quipus encode quantities through knot type and position in a decimal place-value system.
- Administrative use
- Inka officials used quipus for records such as counts of people, goods, tribute and obligations.
- Open question
- Whether and how quipus encoded narrative or historical information remains under investigation.
Timeline
Before the Inka Empire
Andean knotted-cord recordkeeping had earlier precedents; museum scholarship identifies quipus among the Wari and Tiwanaku traditions.
c. 1400–1532 CE
Most surviving museum quipus are associated with the Inka period, when the cords served the empire's extensive recordkeeping needs.
Mid-16th century onward
Spanish colonization disrupted Andean recordkeeping traditions, and many quipus were lost or destroyed; surviving specimens are now studied in collections and databases.
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References
- 1.Quipu
Smithsonian Institution, National Museum of the American Indian · other · reliability: high · retrieved 20 October 2026
Supports: Overview of quipu materials, uses, numerical reading and surviving examples in collections.
- 2.quipu
The British Museum · other · reliability: high · retrieved 20 October 2026
Supports: Curatorial description of an Inka quipu's materials and structure, decimal accounting, trained recordkeepers and the unresolved possibility of narrative content.
- 3.Long Before the W-2, There Was the Quipu: Accounting Systems of Incan and Andean Peoples
Harvard Library · other · reliability: high · retrieved 20 October 2026
Supports: Overview of Andean and Inka numerical records, cord construction, uncertainty over narrative uses and loss during colonization.
- 4.Inka Khipus (1450–1534 CE)
Dumbarton Oaks, Harvard University · other · reliability: high · retrieved 20 October 2026
Supports: Curated exhibit on Inka khipu structure, decimal positional knots, recordkeepers and accounts of possible narrative records.
- 5.The Khipu Database (Khipu Archives)
UNESCO Memory of the World Programme, Latin America and the Caribbean · other · reliability: high · retrieved 20 October 2026
Supports: Description of the Harvard Khipu Database and its role in documenting and preserving records of surviving quipus.
References are suggested by the research engine and may be incomplete. Unverified URLs are omitted rather than guessed.
Article history
- Version 120 October 2026 · EditorCreated by Zapia