Convert Wey to Grain
Convert weys to grains instantly. 1 wey = 1764000.2722268435 grain — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Grain to Wey converter for the reverse conversion.
Units explained
Wey
The wey was an English bulk weight, here taken as 252 pounds (about 114.3 kg).
From Old English 'waege', a weighing or balance.
Obsolete English unit for wool, cheese, and salt.
Used in medieval and early-modern English trade.
Grain
The grain (gr) equals 1/7000 of an avoirdupois pound, about 64.8 milligrams.
Based on the nominal mass of a single barley grain.
Ammunition and bullet mass, archery, and historical pharmacy.
Standardized through the English avoirdupois system and retained in 1959.
Wey to Grain conversion formula
Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.
The relationship between weys and grains:
To convert weys to grains, multiply the value in weys by 1764000.2722268435. To reverse, multiply grains by 5.668933e-7.
How to use this converter
Type a value into the calculator. The result in grains updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Grain to Wey converter for the reverse direction.
Step-by-step: convert weys to grains
- Write down the value in weys (wey).
- Multiply that value by the factor 1764000.2722268435.
- The product is the equivalent value in grains (gr).
- To reverse, multiply the grain value by 5.668933e-7.
Worked examples
Example 1 — Convert 1 wey to gr:
1 × 1764000.2722268435 = 1764000.2722268435 gr
Example 2 — Convert 100 wey to gr:
100 × 1764000.2722268435 = 1.764e+8 gr
Wey to Grain conversion table
Standard reference values for converting weys to grains:
| Wey [wey] | Grain [gr] |
|---|---|
| 0.01 | 17640.0027222684 |
| 0.1 | 176400.0272226844 |
| 1 | 1764000.2722268435 |
| 2 | 3528000.544453687 |
| 3 | 5292000.8166805301 |
| 4 | 7056001.0889073741 |
| 5 | 8820001.3611342181 |
| 10 | 1.764e+7 |
| 20 | 3.528001e+7 |
| 30 | 5.292001e+7 |
| 40 | 7.056001e+7 |
| 50 | 8.820001e+7 |
| 100 | 1.764e+8 |
| 500 | 8.820001e+8 |
| 1000 | 1.764e+9 |
Frequently asked questions
How many grains is 1 wey?
How do I convert weys to grains?
How do I convert grains back to weys?
How many grains is 100 weys?
Popular weight unit conversions
Convert Wey to other weight units
Show all Wey conversions
Metric / SI (18 units)
Avoirdupois (14 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 wey = 1764000.2722268435 gr) 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.