Hectares to Tsubo (ha to tsubo)

1 hectare equals 3,025 tsubo exactly.

1 hectare = 3,025 tsubo

How to convert hectares to tsubo

To convert hectares to tsubo, multiply the number of hectares by 3,025. This factor is exact. To go the other way, multiply tsubo by 0.0003305785124 (rounded).

tsubo = hectares × 3,025

Example: 10 hectares = 30,250 tsubo.

About these units

Hectare (ha)

Metric (SI)Current unit

10,000 square meters (2.471 acres). The standard unit for land and agricultural areas outside the US.

Hecto plus are: the name was coined in French, and are itself comes from the Latin area, meaning an open space. The French law of 18 Germinal, Year III (7 April 1795) defined the are as 100 square meters, and the hectare followed as 100 ares, or 10,000 square meters. The unit is therefore a product of the original French metric reforms rather than of later SI work, which is one reason its official status has always been slightly awkward.

When the SI was set up in 1960 the are was not recognized, and the hectare was classed as a non-SI unit accepted for use with it. In practice it is the standard unit for land ownership, planning and agriculture in the European Union, the United Kingdom, Canada, Australia, New Zealand and South Africa, while the United States and Myanmar stay with the acre. A hectare is a square 100 meters on each side, about the size of Trafalgar Square, and equals roughly 2.47 acres. One hundred of them make a square kilometer.

1 hectare = 10,000 square meters (exactly).

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

Tsubo (tsubo)

JapaneseTraditional unit (still used in some regions)

Exactly 400/121 m² (3.3058 m²), one square ken: about two tatami mats. Still the usual unit for land and property prices in Japan.

Walk into a Japanese estate agent's window and the land is still priced per tsubo. The unit is the area of a square ken, which is six shaku on a side, so 36 square shaku. Once the shaku was fixed at 10/33 metre, the tsubo followed as exactly 400/121 square metres, about 3.306.

Builders think of it as two tatami mats, since a mat is half a tsubo, and some sources also count it as 10 go. In farming contexts the same area is sometimes called a bu. A tsubo is a very small plot, so larger land is quoted in multiples such as the se, tan and cho.

The unit travelled with Japanese rule. Korea's pyeong and Taiwan's ping are the same 3.3058 square metres. South Korea formally banned the pyeong in 1961 and made commercial use an offence in 2007, yet it persists informally, much as Japan kept the tsubo after metric units became the legal standard.

1 tsubo = 3.305785124 square meters (approximately).

Sources: Wikipedia: Tsubo; Wikipedia: Japanese units of measurement; Wikipedia: Shaku (unit)

Related conversions

See all area units.