Convert Acre to Township
Convert acres to townships instantly. 1 acre = 4.340278e-5 township — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Township to Acre converter for the reverse conversion.
Units explained
Acre
An acre is an imperial unit of area equal to exactly 4046.8564224 m². It is the most widely used non-metric unit for land area, particularly in the US, UK, and India.
Originally defined in medieval England as the area one yoke of oxen could plow in a day, approximately 40 perches by 4 perches. Standardized via the 1959 International Yard and Pound Agreement.
Acres are the standard land measurement unit in the US (real estate, agriculture), the UK (rural property), and widely used in India (alongside hectares and traditional regional units). 1 acre = 4840 sq yd = 43,560 sq ft = 0.4047 hectare.
Medieval English farming origin; modern exact value standardized in 1959.
Township
A township is a unit of area used in the US Public Land Survey System (PLSS), equal to 36 square miles (approximately 93.24 km²).
Defined by the Land Ordinance of 1785 as a 6-mile by 6-mile square, divided into 36 sections of 1 square mile each.
Townships are the largest standard unit in the PLSS and appear in US public land records, county boundaries, and historical land grants throughout the central and western US.
Defined by the US Land Ordinance of 1785.
Acre to Township conversion formula
The relationship between acres and townships:
To convert acres to townships, multiply the value in acres by 4.340278e-5. To reverse, multiply townships by 23039.9999999763.
How to use this converter
Type a value into the calculator. The result in townships updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Township to Acre converter for the reverse direction.
Step-by-step: convert acres to townships
- Write down the value in acres (ac).
- Multiply that value by the factor 4.340278e-5.
- The product is the equivalent value in townships (twp).
- To reverse, multiply the township value by 23039.9999999763.
Worked examples
Example 1 — Convert 1 ac to twp:
1 × 4.340278e-5 = 4.340278e-5 twp
Example 2 — Convert 100 ac to twp:
100 × 4.340278e-5 = 0.0043402778 twp
Real-world example — Coastal cruise distances
A 10-acre coastal sailing route converts to a different value in townships — useful for cruise operators who switch between maritime, aviation, and road-distance units depending on the leg of the trip.
10 ac × 4.340278e-5 = 0.0004340278 twp
Real-world example — Road-sign distances across systems
A 100-acre road sign converts cleanly into townships — exactly the conversion drivers planning trips abroad rely on when reading road signs in a different measurement system.
100 ac × 4.340278e-5 = 0.0043402778 twp
Real-world example — Endurance race distances
A 50-acre cycling or running race converts to a recognizable distance in townships. Endurance athletes coming from a different measurement system use this conversion to compare training plans across regions.
50 ac × 4.340278e-5 = 0.0021701389 twp
Acre to Township conversion table
Standard reference values for converting acres to townships:
| Acre [ac] | Township [twp] |
|---|---|
| 0.01 | 4.340278e-7 |
| 0.1 | 4.340278e-6 |
| 1 | 4.340278e-5 |
| 2 | 8.680556e-5 |
| 3 | 0.0001302083 |
| 4 | 0.0001736111 |
| 5 | 0.0002170139 |
| 10 | 0.0004340278 |
| 20 | 0.0008680556 |
| 30 | 0.0013020833 |
| 40 | 0.0017361111 |
| 50 | 0.0021701389 |
| 100 | 0.0043402778 |
| 500 | 0.0217013889 |
| 1000 | 0.0434027778 |
Frequently asked questions
How many townships is 1 acre?
How do I convert acres to townships?
How do I convert townships back to acres?
How many townships is 100 acres?
Popular area unit conversions
Convert Acre to other area units
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Metric / SI (16 units)
Imperial / US Customary (14 units)
US Survey (5 units)
Indian Subcontinent (16 units)
Other Regional (10 units)
Scientific / Physics (5 units)
Historical / Pre-metric European (6 units)
Sources & references
Conversion factor (1 ac = 4.340278e-5 twp) 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.