What this unit was
Khmer hat (Angkor Wat reconstruction) is modelled here as a length standard of the Khmer tradition, associated with Angkor Cambodia during Reign of Suryavarman II in the early 12th century CE. The converter represents one hat as 0.43545 m; its basis is architecture-inferred. The matrix carries an indicative uncertainty of ± 0.05 m.
Within that setting, the unit belonged to a working system for survey, building, travel, and the organisation of built space. It should be read with its period, locality, and evidential basis attached, not as a universal value shared by every culture using a similar name.
Evidence of use and sources
The working value is traceable to Buildings 2025 Angkor Wat geometric planning review. Its record is classified as low confidence and uses the stated basis rather than an assumed culture-wide constant.
Local-library boundary. The supplied local library has no directly pertinent quotation for this tradition. The linked record source supports the stated conversion; three relevant local quotations require a dedicated source acquisition.
What the unit meant
The Khmer hat is a forearm measure related to the broad cubit family. Khmer inscriptions and later usage support the existence of cubit-like measures, but they do not establish one universal magnitude for every Angkorian building. Eleanor Mannikka derived 0.43545 m by testing architectural axes and circumferences at Angkor Wat. That makes the value a monument-specific reconstruction, not a defined standard.
How this site models it
The converter retains Mannikka’s 0.43545 m candidate because it is explicit, reproducible, and central to published claims about Angkor Wat. It also carries a deliberately wide uncertainty of plus or minus 0.05 m and low confidence. Use it to reproduce a proposed modular reading; do not silently export it to every Khmer temple or treat the final decimal places as archaeological precision.
What not to infer
A unit chosen by trial against many dimensions can reward the pattern the researcher hoped to find. Stronger arguments would connect the magnitude to inscriptions, tools, repeated construction modules, or independent buildings. The converter therefore distinguishes the arithmetic of the 0.43545 m model from the unresolved historical question of how consistently that hat was realised.
Angkor Wat: the case-study lens
A world-famous temple mountain joins hydraulic landscape, cardinal orientation, equinox light, and contested claims that architectural lengths encode solar numbers. This pairing is a historically bounded investigation, not a claim that one decimal unlocks the whole building.
Open the full Angkor Wat dossier.
Values in the site matrix
| Standard | Representative | Uncertainty | Region | Period | Confidence |
|---|---|---|---|---|---|
| Khmer hat (Angkor Wat reconstruction) | 0.43545 m | ±0.05 m | Angkor Cambodia | Reign of Suryavarman II in the early 12th century CE | low |
Sources
- Buildings 2025 Angkor Wat geometric planning review; basis: architecture inferred.