Inches to Stadia (in to stad)

1 inch equals 0.0001322916667 stadia (rounded).

1 inch = 0.0001322916667 stadia

How to convert inches to stadia

To convert inches to stadia, multiply the number of inches by 0.0001322916667. The factor is rounded to 10 significant digits. To go the other way, multiply stadia by 7,559.055118 (rounded).

stadia = inches × 0.0001322916667

Example: 10 inches = 0.001322916667 stadia.

Approximate value. Standards for the stadion varied by place and period, so this converter uses the most commonly cited value. Treat results as estimates, not exact figures.

About these units

Inch (in)

US & ImperialCurrent unit

1/12 of a foot. Defined as exactly 25.4 millimeters since 1959, when the US and Commonwealth countries agreed a common international inch.

Latin uncia, meaning one-twelfth, is the root of both inch and ounce, and it passed into Old English as ynce. Roman measurers divided their foot into twelve unciae, and the English inch kept that twelfth. After 1066 an inch was reckoned as three barleycorns, and a 1324 statute attributed to Edward II spelled out the definition as three grains of barley, dry and round, placed end to end lengthwise. For centuries the inch was simply a twelfth of a foot, or a thirty-sixth of a yard, and the US and UK each kept their own copy of the standard yard.

Those copies differed slightly until the 1959 international agreement fixed the yard at exactly 0.9144 meter, which made the inch exactly 25.4 millimeters. The US adopted it in 1959 and the UK ratified it in 1963, effective 1964. Today the inch is still the customary unit in the United States and Canada, and the UK keeps it on road signs. Worldwide it also names display diagonals, wheel rims, tire codes and pipe sizes.

1 inch = 0.0254 meters (exactly).

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

Stadion (stad)

Ancient GreekHistorical unit (no longer in standard use)Approximate value

The length of the footrace track at Olympia, about 192 m. Other Greek cities used slightly different stadia, from roughly 150 to 210 m.

From the Greek word stadion came the Latin stadium and the English stade, and eventually the stadium where athletes compete. It was the footrace track, and as a distance it was defined, according to Herodotus, as 600 Greek feet. Because the foot differed between cities, the stadion did too. The Olympic version is put at about 192 m, which one table describes as 200 Heracles steps, a proposal from Carl Lehmann-Haupt in 1929.

Estimates for other stadia show how loose the unit is. A figure near 185 m is the most common convergence for the Ptolemaic or Attic stadion, while Babylonian-Persian and Phoenician-Egyptian values reach about 196 and 209 m, and an itinerary stadion near 157 m has been argued for road distances. The overall range is roughly 150 to 210 m. The choice matters for judging Eratosthenes' measurement of the Earth. Eight stadia made a Roman mile, and the medieval stadium came to mean the furlong, about 201 m in modern terms.

1 stadion = 192 meters (approximately).

Sources: Wikipedia: Stadion (unit); Wikipedia: Ancient Greek units of measurement

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