Convert Mace to Slug
Convert maces to slugs instantly. 1 mace = 0.0002590079 slug — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Slug 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.
Slug
The slug is the mass that accelerates at 1 ft/s^2 under a force of one pound-force, about 14.59 kg.
Coined in the early 20th century for the British gravitational (engineering) system.
US and British engineering dynamics.
Introduced in the British gravitational system of units.
Mace to Slug 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 slugs:
To convert maces to slugs, multiply the value in maces by 0.0002590079. To reverse, multiply slugs by 3860.8862523598.
How to use this converter
Type a value into the calculator. The result in slugs updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Slug to Mace converter for the reverse direction.
Step-by-step: convert maces to slugs
- Write down the value in maces (mace).
- Multiply that value by the factor 0.0002590079.
- The product is the equivalent value in slugs (slug).
- To reverse, multiply the slug value by 3860.8862523598.
Worked examples
Example 1 — Convert 1 mace to slug:
1 × 0.0002590079 = 0.0002590079 slug
Example 2 — Convert 100 mace to slug:
100 × 0.0002590079 = 0.025900789 slug
Real-world example — Postcard and small-object dimensions
A postcard is about 5 maces wide. Converting to slugs is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 mace × 0.0002590079 = 0.0012950394 slug
Real-world example — Ruler-scale measurements
A 30-mace school ruler converts cleanly to slugs — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 mace × 0.0002590079 = 0.0077702367 slug
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 slugs daily when mixing metric and imperial tools.
10 mace × 0.0002590079 = 0.0025900789 slug
Mace to Slug conversion table
Standard reference values for converting maces to slugs:
| Mace [mace] | Slug [slug] |
|---|---|
| 0.01 | 2.590079e-6 |
| 0.1 | 2.590079e-5 |
| 1 | 0.0002590079 |
| 2 | 0.0005180158 |
| 3 | 0.0007770237 |
| 4 | 0.0010360316 |
| 5 | 0.0012950394 |
| 10 | 0.0025900789 |
| 20 | 0.0051801578 |
| 30 | 0.0077702367 |
| 40 | 0.0103603156 |
| 50 | 0.0129503945 |
| 100 | 0.025900789 |
| 500 | 0.1295039448 |
| 1000 | 0.2590078895 |
Frequently asked questions
How many slugs is 1 mace?
How do I convert maces to slugs?
How do I convert slugs back to maces?
How many slugs is 100 maces?
Popular weight unit conversions
Convert Mace to other weight units
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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 = 0.0002590079 slug) 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.