A yard is exactly 0.9144 meters.
Yards to Astronomical units Converter — yd to AU
Convert Yard (yd) to Astronomical unit (AU) using the exact conversion factor (1 yard = 6.112386e-12 astronomical unit). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Yards to Astronomical units converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
An astronomical unit is the mean Earth-Sun distance.
Result = input x 0.9144 / 1.49597871e+11.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Yards to Astronomical units
Yard and Astronomical unit both measure length. Yard is typically associated with united States and United Kingdom (sports fields, fabric, some construction), while Astronomical unit is typically associated with used internationally in astronomy for solar-system-scale distances..
Formula
astronomical units = yards × 6.112386e-12
This factor comes from each unit's defined relationship to the category's base unit: 1 yard equals 0.9144 base units, and 1 astronomical unit equals 149597870700 base units, so dividing one by the other gives the direct yard-to-astronomical unit factor of 6.112386e-12.
Simple example
1 yd × 6.112386e-12 = 6.112386e-12 AU
1 yard = 6.112386e-12 astronomical units.
Real-world example
10 yd × 6.112386e-12 = 6.112386e-11 AU
10 yards = 6.112386e-11 astronomical units.
Conversion table
| Yard (yd) | Astronomical unit (AU) |
|---|---|
| 1 yd | 6.112386e-12 AU |
| 5 yd | 3.056193e-11 AU |
| 10 yd | 6.112386e-11 AU |
| 21.0975 yd | 1.289561e-10 AU |
| 42.195 yd | 2.579121e-10 AU |
| 100 yd | 6.112386e-10 AU |
Reverse conversion: Astronomical unit to Yard
6.112386e-12 AU × 163602220800 = 0.999999924 yd
6.112386e-12 astronomical units = 0.999999924 yards.
yards = astronomical units × 163602220801
For a page dedicated to this direction, see Astronomical unit to Yard.
Yard vs. Astronomical unit
| Aspect | Yard | Astronomical unit |
|---|---|---|
| Family | US/imperial customary unit | Non-SI unit accepted for use with SI (astronomical) |
| Typical use | American football field measurement | Measuring distances within the solar system (planetary orbits) |
| Where it's used | United States and United Kingdom (sports fields, fabric, some construction) | Used internationally in astronomy for solar-system-scale distances. |
Understanding the Yard
Yard (yd) measures distance. The international yard is defined as exactly 0.9144 meters. It is classified as a US/imperial customary unit.
Where it's used: United States and United Kingdom (sports fields, fabric, some construction)
Uses of the Yard today
- American football field measurement
- Fabric and textile measurement
- Golf and other sports distances in the US/UK
History of the Yard
The yard has English origins possibly tied to a standard 'gird' or arm's-length measure; it was fixed at exactly 0.9144 meters by the 1959 International Yard and Pound Agreement, the same treaty that standardized the foot, inch, mile, and pound.
Historical origin. Yard was not the invention of a single named person; it developed through the process described above.
Understanding the Astronomical unit
Astronomical unit (AU) measures distance. The astronomical unit is defined as exactly 149,597,870,700 meters, close to the average Earth-Sun distance. It is classified as a Non-SI unit accepted for use with SI (astronomical).
Where it's used: Used internationally in astronomy for solar-system-scale distances.
Uses of the Astronomical unit today
- Measuring distances within the solar system (planetary orbits)
- Astronomical calculations and spacecraft navigation
- Popular science communication about the solar system
History of the Astronomical unit
The astronomical unit originated from 17th-19th century attempts to measure the Earth-Sun distance, refined over time using transits of Venus and later radar and spacecraft ranging.
In 2012, the International Astronomical Union fixed the AU at exactly 149,597,870,700 meters, replacing its earlier definition (tied to gravitational calculations) with a simple fixed distance, independent of the slightly-variable actual Earth-Sun distance.
Historical origin. Astronomical unit was not the invention of a single named person; it developed through the process described above.
Yard — sources
- NIST — International yard and pound (1959) — Fixes the modern yard at exactly 0.9144 meters.
Astronomical unit — sources
- IAU Resolution B2 (2012) — Fixes the astronomical unit at exactly 149,597,870,700 meters.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many astronomical units are in 1 yard?
1 yard equals 6.112386e-12 astronomical units, using the exact defined conversion factor rather than an estimate.
How do I convert yard to astronomical unit?
Multiply the yard value by 6.112386e-12. The converter above does this instantly to whatever precision you set.
How do I convert astronomical unit back to yard?
Use the reverse factor: 1 astronomical unit equals 163,602,220,800 yards. You can also use the swap control in the converter above to flip the direction instantly.
What is a yard?
Yard (yd) measures distance. The international yard is defined as exactly 0.9144 meters. It is classified as a US/imperial customary unit.
What is a astronomical unit?
Astronomical unit (AU) measures distance. The astronomical unit is defined as exactly 149,597,870,700 meters, close to the average Earth-Sun distance. It is classified as a Non-SI unit accepted for use with SI (astronomical).
Is the yard to astronomical unit conversion exact?
Yes. The astronomical unit is defined as exactly 149,597,870,700 meters, close to the average Earth-Sun distance. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the yard still used today?
United States and United Kingdom (sports fields, fabric, some construction)