Sen (Thai) to Yards (sen to yd)

1 sen (Thai) equals 43.74453193 yards (rounded).

1 sen (Thai) = 43.74453193 yards

How to convert sen (Thai) to yards

To convert sen (Thai) to yards, multiply the number of sen (Thai) by 43.74453193. The factor is rounded to 10 significant digits. To go the other way, multiply yards by 0.02286.

yards = sen (Thai) × 43.74453193

Example: 10 sen (Thai) = 437.4453193 yards.

About these units

Sen (Thai) (sen)

ThaiTraditional unit (still used in some regions)

20 wa, exactly 40 meters. A traditional Thai unit of distance, rarely used now except in rural areas.

Sen, a word that also means a rope or line, names a Thai distance of 20 wa. In metric terms that is 40 meters, a round figure that surveyors of the late nineteenth century found convenient for map scales.

The Royal Thai Survey Department began its cadastral survey in 1896, and its director, R. W. Giblin, noted that 40 m, or 4,000 cm, make one sen, so plans could be drawn at 1:4,000. A square with sides of one sen is the rai, which is why the sen sits at the center of the Thai land system.

Above it, 400 sen make one yot, a long travel distance of 16 km, and below it come the wa, sok and khuep. Day to day the sen has largely given way to meters and kilometers, though it survives in rural speech and in the definition of the rai.

1 sen (Thai) = 40 meters (exactly).

Sources: Wikipedia: Thai units of measurement; Wikipedia: Rai (unit)

Yard (yd)

US & ImperialCurrent unit

3 feet or 36 inches, exactly 0.9144 meters. Used for sports fields, fabric and short distances in the US and UK.

Yard descends from the Old English gerd or gyrd, meaning a branch, stave or measuring rod. It first appears in the late seventh-century laws of Ine of Wessex, though there it names a tax unit, the yardland. Around 959 to 963 King Edgar ordered that the measure held at Winchester be used throughout his realm, the earliest record of a prototype. A story that Henry I fixed the yard as the distance from his nose to his thumb is later folklore, and the true origin, whether pace, cubit or waist, remains speculative.

Britain defined the Imperial Standard Yard in 1824 as the distance between two marks on a brass rod at 62 degrees Fahrenheit. A fire in 1834 damaged the standard, a replacement was made in 1845, and the Weights and Measures Act 1855 recognized it. The 1959 international agreement then fixed the yard at exactly 0.9144 meter. Today it measures American and Canadian football fields, association football pitches and cricket pitches, appears on UK road signs for short distances, and is still used to sell fabric in the US and UK.

1 yard = 0.9144 meters (exactly).

Sources: Wikipedia: Yard; Wikipedia: Inch; NIST Guide to the SI, Appendix B.8: conversion factors

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