Sen (Thai) to Feet (sen to ft)

1 sen (Thai) equals 131.2335958 feet (rounded).

1 sen (Thai) = 131.2335958 feet

How to convert sen (Thai) to feet

To convert sen (Thai) to feet, multiply the number of sen (Thai) by 131.2335958. The factor is rounded to 10 significant digits. To go the other way, multiply feet by 0.00762.

feet = sen (Thai) × 131.2335958

Example: 10 sen (Thai) = 1,312.335958 feet.

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)

Foot (ft)

US & ImperialCurrent unit

12 inches. Defined as exactly 0.3048 meters. Still the standard unit for height, altitude in aviation and room dimensions in the US and UK.

Human anatomy supplied the idea: an adult foot is roughly 15 percent of body height. Ancient cultures turned that into standards, but not the same one. The Greek pous was about 302 mm, the standard Roman pes about 295.7 mm, and a Harappan foot of about 335 mm has been reported from the Indus Valley. Historically, a foot fell somewhere between about 250 and 335 mm. Charlemagne tried to standardize units around 790 with little lasting success, and in 1593 English law fixed the statute mile at 5,280 feet.

The modern foot dates from the 1959 International Yard and Pound Agreement, which defined the yard as exactly 0.9144 meter and so the foot as exactly 0.3048 meter; the UK adopted it on 1 January 1964. The US survey foot, defined in 1893 as 1200/3937 meter, was deprecated on 31 December 2022. Feet remain in everyday use for height and rooms in the US, and ISO shipping containers are defined in them. Aviation altitudes use them too: flight level 330 means 33,000 feet.

1 foot = 0.3048 meters (exactly).

Sources: Wikipedia: Foot (unit); Wikipedia: Mile; NIST Guide to the SI, Appendix B.8: conversion factors

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