Convert Acre to Carucate
Convert acres to carucates instantly. 1 acre = 0.0083333294 carucate — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Carucate 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.
Carucate
A carucate was a medieval English unit of land area equal to approximately 485,623 m² (about 120 acres or 48.6 hectares).
Originated in early medieval England as the area one team of eight oxen could plow in a year. The size varied considerably by soil type and region.
Carucates appear in the Domesday Book and other medieval English land surveys. The unit was used for taxation assessment but was inherently variable due to its agricultural-output basis.
Anglo-Saxon English origin; obsolete by late medieval period.
Acre to Carucate conversion formula
The relationship between acres and carucates:
To convert acres to carucates, multiply the value in acres by 0.0083333294. To reverse, multiply carucates by 120.0000566642.
How to use this converter
Type a value into the calculator. The result in carucates updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Carucate to Acre converter for the reverse direction.
Step-by-step: convert acres to carucates
- Write down the value in acres (ac).
- Multiply that value by the factor 0.0083333294.
- The product is the equivalent value in carucates ().
- To reverse, multiply the carucate value by 120.0000566642.
Worked examples
Example 1 — Convert 1 ac to :
1 × 0.0083333294 = 0.0083333294
Example 2 — Convert 100 ac to :
100 × 0.0083333294 = 0.8333329398
Real-world example — Maritime exclusion zone
A 200-acre exclusion zone (a common maritime boundary) converts to a different value in carucates that's useful when describing the same zone in everyday land-distance units.
200 ac × 0.0083333294 = 1.6666658797
Real-world example — Coastal cruise distances
A 10-acre coastal sailing route converts to a different value in carucates — useful for cruise operators who switch between maritime, aviation, and road-distance units depending on the leg of the trip.
10 ac × 0.0083333294 = 0.083333294
Real-world example — Road-sign distances across systems
A 100-acre road sign converts cleanly into carucates — exactly the conversion drivers planning trips abroad rely on when reading road signs in a different measurement system.
100 ac × 0.0083333294 = 0.8333329398
Acre to Carucate conversion table
Standard reference values for converting acres to carucates:
| Acre [ac] | Carucate [] |
|---|---|
| 0.01 | 8.333329e-5 |
| 0.1 | 0.0008333329 |
| 1 | 0.0083333294 |
| 2 | 0.0166666588 |
| 3 | 0.0249999882 |
| 4 | 0.0333333176 |
| 5 | 0.041666647 |
| 10 | 0.083333294 |
| 20 | 0.166666588 |
| 30 | 0.2499998819 |
| 40 | 0.3333331759 |
| 50 | 0.4166664699 |
| 100 | 0.8333329398 |
| 500 | 4.1666646992 |
| 1000 | 8.3333293983 |
Frequently asked questions
How many carucates is 1 acre?
How do I convert acres to carucates?
How do I convert carucates back to acres?
How many carucates 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 = 0.0083333294 ) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.