Convert Mace to Femtogram
Convert maces to femtograms instantly. 1 mace = 3.779936e+15 femtogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Femtogram 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.
Femtogram
A femtogram (fg) equals 10^-18 kilogram.
From the SI prefix 'femto-' (from Danish/Norwegian 'femten', fifteen).
Nanotechnology and high-sensitivity mass spectrometry.
The femto- prefix was adopted by the CGPM in 1975.
Mace to Femtogram 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 femtograms:
To convert maces to femtograms, multiply the value in maces by 3.779936e+15. To reverse, multiply femtograms by 2.645547e-16.
How to use this converter
Type a value into the calculator. The result in femtograms updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Femtogram to Mace converter for the reverse direction.
Step-by-step: convert maces to femtograms
- Write down the value in maces (mace).
- Multiply that value by the factor 3.779936e+15.
- The product is the equivalent value in femtograms (fg).
- To reverse, multiply the femtogram value by 2.645547e-16.
Worked examples
Example 1 — Convert 1 mace to fg:
1 × 3.779936e+15 = 3.779936e+15 fg
Example 2 — Convert 100 mace to fg:
100 × 3.779936e+15 = 3.779936e+17 fg
Real-world example — Small-scale to atomic-scale
One mace equals 10 million femtograms — useful for physics curricula that relate everyday measurements to atomic and optical scales.
1 mace × 3.779936e+15 = 3.779936e+15 fg
Real-world example — Centimeter to wavelength scale
One mace equals 10 million femtograms. Physics curricula use this kind of conversion to relate everyday measurements to atomic and optical scales.
1 mace × 3.779936e+15 = 3.779936e+15 fg
Mace to Femtogram conversion table
Standard reference values for converting maces to femtograms:
| Mace [mace] | Femtogram [fg] |
|---|---|
| 0.01 | 3.779936e+13 |
| 0.1 | 3.779936e+14 |
| 1 | 3.779936e+15 |
| 2 | 7.559872e+15 |
| 3 | 1.133981e+16 |
| 4 | 1.511974e+16 |
| 5 | 1.889968e+16 |
| 10 | 3.779936e+16 |
| 20 | 7.559872e+16 |
| 30 | 1.133981e+17 |
| 40 | 1.511974e+17 |
| 50 | 1.889968e+17 |
| 100 | 3.779936e+17 |
| 500 | 1.889968e+18 |
| 1000 | 3.779936e+18 |
Frequently asked questions
How many femtograms is 1 mace?
How do I convert maces to femtograms?
How do I convert femtograms back to maces?
How many femtograms is 100 maces?
Popular weight unit conversions
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Metric / SI (18 units)
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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 = 3.779936e+15 fg) 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.