Convert Tan to Arpent (French)
Convert tan to arpents instantly. 1 tan = 0.2349528548 arpent (french) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Arpent (French) to Tan converter for the reverse conversion.
Units explained
Tan
A tan is a Japanese unit of area equal to approximately 991.74 m². It equals 300 tsubo, or 1/10 chō.
Traditional Japanese agricultural unit. The tan was the standard rice paddy size in pre-modern Japan.
Tan appears in Japanese rural property records and historical land descriptions. Used alongside chō and tsubo in Japanese agricultural documentation.
Traditional Japanese unit; standardized via the tsubo definition.
Arpent (French)
A French arpent is a historical unit of land area used in pre-metric France, approximately 4221 m² (close to one acre).
Originated as a medieval French land unit; varied considerably by province. The 'arpent de Paris' was officially fixed at 100 perches squared, the perche being 18 pieds.
French arpents appear in pre-revolutionary French land records and in genealogical research. The unit was largely abolished after the French Revolution in favor of metric units.
Medieval French origin; abolished after the French Revolution in favor of metric.
Tan to Arpent (French) conversion formula
The relationship between tan and arpents:
To convert tan to arpents, multiply the value in tan by 0.2349528548. To reverse, multiply arpents by 4.2561730138.
How to use this converter
Type a value into the calculator. The result in arpents updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Arpent (French) to Tan converter for the reverse direction.
Step-by-step: convert tan to arpents
- Write down the value in tan (tan).
- Multiply that value by the factor 0.2349528548.
- The product is the equivalent value in arpents (arpent).
- To reverse, multiply the arpent (french) value by 4.2561730138.
Worked examples
Example 1 — Convert 1 tan to arpent:
1 × 0.2349528548 = 0.2349528548 arpent
Example 2 — Convert 100 tan to arpent:
100 × 0.2349528548 = 23.4952854774 arpent
Tan to Arpent (French) conversion table
Standard reference values for converting tan to arpents:
| Tan [tan] | Arpent (French) [arpent] |
|---|---|
| 0.01 | 0.0023495285 |
| 0.1 | 0.0234952855 |
| 1 | 0.2349528548 |
| 2 | 0.4699057095 |
| 3 | 0.7048585643 |
| 4 | 0.9398114191 |
| 5 | 1.1747642739 |
| 10 | 2.3495285477 |
| 20 | 4.6990570955 |
| 30 | 7.0485856432 |
| 40 | 9.398114191 |
| 50 | 11.7476427387 |
| 100 | 23.4952854774 |
| 500 | 117.4764273869 |
| 1000 | 234.9528547738 |
Frequently asked questions
How many arpents is 1 tan?
How do I convert tan to arpents?
How do I convert arpents back to tan?
How many arpents is 100 tan?
Popular area unit conversions
Convert Tan to other area units
Show all Tan conversions
Metric / SI (5 units)
Imperial / US Customary (3 units)
Sources & references
Conversion factor (1 tan = 0.2349528548 arpent) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.