Convert Yard to Parsec
Convert yards to parsecs instantly. 1 yard = 2.963369e-17 parsec — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Parsec to Yard converter for the reverse conversion.
Units explained
Yard
A yard is an Imperial and US customary unit of length equal to 3 feet or exactly 0.9144 meters. It is used for medium distances, particularly in athletics and fabric/textile measurement.
The yard's origin is contested but traditionally attributed to the length from the tip of King Henry I's nose to the end of his outstretched thumb. It was standardized in English law from the medieval period and definitively fixed at 0.9144 m exactly by the 1959 International Yard and Pound Agreement.
Yards are used in American football (10 yards for a first down), golf course distances, fabric and carpet sales in the US, and short-distance running events. The UK uses yards informally and on road signs for short distances.
Standardized in English law from the Middle Ages; fixed at 0.9144 m exactly by the 1959 International Yard and Pound Agreement.
Parsec
A parsec (parallax-second) is a distance unit equal to 648,000/π astronomical units — approximately 3.086×10¹⁶ m (3.26 light years). It is the standard distance unit in professional astronomy.
Defined as the distance at which one astronomical unit subtends an angle of one arcsecond. IAU Resolution B2 in 2015 made this an exact definition: 1 pc = (648,000/π) AU.
Parsecs are used in professional astronomy for stellar distances (Proxima Centauri ≈ 1.3 pc), galactic-scale distances (with prefixes kiloparsec and megaparsec), and parallax measurements. Standard since the early 20th century.
Concept introduced by Herbert Hall Turner in 1913; exact definition via the AU adopted by IAU Resolution B2 in 2015.
Yard to Parsec conversion formula
The relationship between yards and parsecs:
To convert yards to parsecs, multiply the value in yards by 2.963369e-17. To reverse, multiply parsecs by 3.374538e+16.
How to use this converter
Type a value into the calculator. The result in parsecs updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Parsec to Yard converter for the reverse direction.
Step-by-step: convert yards to parsecs
- Write down the value in yards (yd).
- Multiply that value by the factor 2.963369e-17.
- The product is the equivalent value in parsecs (pc).
- To reverse, multiply the parsec value by 3.374538e+16.
Worked examples
Example 1 — Convert 1 yd to pc:
1 × 2.963369e-17 = 2.963369e-17 pc
Example 2 — Convert 100 yd to pc:
100 × 2.963369e-17 = 2.963369e-15 pc
Real-world example — Fabric purchase length
Two yards of fabric equals a value in parsecs essential for tailors and textile buyers sourcing material from international suppliers that quote in different units.
2 yd × 2.963369e-17 = 5.926737e-17 pc
Real-world example — Maritime depth conversion
A 10-yard sounding depth converts cleanly into parsecs. Recreational divers and sailors translate between the two units whenever they read legacy charts against modern depth-sounder displays.
10 yd × 2.963369e-17 = 2.963369e-16 pc
Real-world example — Reference scenario in case of fallback
Conversion between human-scale length units is the everyday workflow of architecture, athletics, and apparel design — three of the most common contexts that span metric and imperial systems.
1 yd × 2.963369e-17 = 2.963369e-17 pc
Yard to Parsec conversion table
Standard reference values for converting yards to parsecs:
| Yard [yd] | Parsec [pc] |
|---|---|
| 0.01 | 2.963369e-19 |
| 0.1 | 2.963369e-18 |
| 1 | 2.963369e-17 |
| 2 | 5.926737e-17 |
| 3 | 8.890106e-17 |
| 4 | 1.185347e-16 |
| 5 | 1.481684e-16 |
| 10 | 2.963369e-16 |
| 20 | 5.926737e-16 |
| 30 | 8.890106e-16 |
| 40 | 1.185347e-15 |
| 50 | 1.481684e-15 |
| 100 | 2.963369e-15 |
| 500 | 1.481684e-14 |
| 1000 | 2.963369e-14 |
Frequently asked questions
How many parsecs is 1 yard?
How do I convert yards to parsecs?
How do I convert parsecs back to yards?
How many parsecs is 100 yards?
Popular length unit conversions
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Metric / SI (18 units)
Imperial / US Customary (26 units)
Nautical (1 units)
Astronomical (9 units)
Atomic / Physics (6 units)
Typographic (3 units)
Sources & references
Conversion factor (1 yd = 2.963369e-17 pc) 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.