Convert Mace to Wey
Convert maces to weys instantly. 1 mace = 3.306878e-5 wey — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Wey to Mace converter for the reverse conversion.
Units explained
Mace
The mace equals one-tenth of a tael, about 3.78 grams.
From the Chinese 'qian'; 'mace' is the European trade name.
Chinese and Southeast Asian gold and traditional-medicine trade.
Part of the traditional Chinese tael system.
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.
Mace to Wey 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 maces and weys:
To convert maces to weys, multiply the value in maces by 3.306878e-5. To reverse, multiply weys by 30240.0033333898.
How to use this converter
Type a value into the calculator. The result in weys updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Wey to Mace converter for the reverse direction.
Step-by-step: convert maces to weys
- Write down the value in maces (mace).
- Multiply that value by the factor 3.306878e-5.
- The product is the equivalent value in weys (wey).
- To reverse, multiply the wey value by 30240.0033333898.
Worked examples
Example 1 — Convert 1 mace to wey:
1 × 3.306878e-5 = 3.306878e-5 wey
Example 2 — Convert 100 mace to wey:
100 × 3.306878e-5 = 0.0033068779 wey
Real-world example — Ruler-scale measurements
A 30-mace school ruler converts cleanly to weys — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 mace × 3.306878e-5 = 0.0009920634 wey
Real-world example — Hardware-scale dimensions
A 10-mace fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between maces and weys daily when mixing metric and imperial tools.
10 mace × 3.306878e-5 = 0.0003306878 wey
Real-world example — Postcard and small-object dimensions
A postcard is about 5 maces wide. Converting to weys is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 mace × 3.306878e-5 = 0.0001653439 wey
Mace to Wey conversion table
Standard reference values for converting maces to weys:
| Mace [mace] | Wey [wey] |
|---|---|
| 0.01 | 3.306878e-7 |
| 0.1 | 3.306878e-6 |
| 1 | 3.306878e-5 |
| 2 | 6.613756e-5 |
| 3 | 9.920634e-5 |
| 4 | 0.0001322751 |
| 5 | 0.0001653439 |
| 10 | 0.0003306878 |
| 20 | 0.0006613756 |
| 30 | 0.0009920634 |
| 40 | 0.0013227512 |
| 50 | 0.001653439 |
| 100 | 0.0033068779 |
| 500 | 0.0165343897 |
| 1000 | 0.0330687794 |
Frequently asked questions
How many weys is 1 mace?
How do I convert maces to weys?
How do I convert weys back to maces?
How many weys is 100 maces?
Popular weight unit conversions
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 mace = 3.306878e-5 wey) 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.