Convert Troy Ounce to Femtogram
Convert troy ounces to femtograms instantly. 1 troy ounce = 3.110348e+16 femtogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Femtogram to Troy Ounce converter for the reverse conversion.
Units explained
Troy Ounce
The troy ounce (ozt) equals about 31.103 grams, one-twelfth of a troy pound.
From the Troy system of weights associated with Troyes, France.
The global standard for pricing gold, silver, platinum, and palladium.
Established in the medieval Troy system and retained for precious metals.
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.
Troy Ounce to Femtogram conversion formula
The relationship between troy ounces and femtograms:
To convert troy ounces to femtograms, multiply the value in troy ounces by 3.110348e+16. To reverse, multiply femtograms by 3.215075e-17.
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 Troy Ounce converter for the reverse direction.
Step-by-step: convert troy ounces to femtograms
- Write down the value in troy ounces (oz t).
- Multiply that value by the factor 3.110348e+16.
- The product is the equivalent value in femtograms (fg).
- To reverse, multiply the femtogram value by 3.215075e-17.
Worked examples
Example 1 — Convert 1 oz t to fg:
1 × 3.110348e+16 = 3.110348e+16 fg
Example 2 — Convert 100 oz t to fg:
100 × 3.110348e+16 = 3.110348e+18 fg
Real-world example — Centimeter to wavelength scale
One troy ounce equals 10 million femtograms. Physics curricula use this kind of conversion to relate everyday measurements to atomic and optical scales.
1 oz t × 3.110348e+16 = 3.110348e+16 fg
Real-world example — Small-scale to atomic-scale
One troy ounce equals 10 million femtograms — useful for physics curricula that relate everyday measurements to atomic and optical scales.
1 oz t × 3.110348e+16 = 3.110348e+16 fg
Troy Ounce to Femtogram conversion table
Standard reference values for converting troy ounces to femtograms:
| Troy Ounce [oz t] | Femtogram [fg] |
|---|---|
| 0.01 | 3.110348e+14 |
| 0.1 | 3.110348e+15 |
| 1 | 3.110348e+16 |
| 2 | 6.220695e+16 |
| 3 | 9.331043e+16 |
| 4 | 1.244139e+17 |
| 5 | 1.555174e+17 |
| 10 | 3.110348e+17 |
| 20 | 6.220695e+17 |
| 30 | 9.331043e+17 |
| 40 | 1.244139e+18 |
| 50 | 1.555174e+18 |
| 100 | 3.110348e+18 |
| 500 | 1.555174e+19 |
| 1000 | 3.110348e+19 |
Frequently asked questions
How many femtograms is 1 troy ounce?
How do I convert troy ounces to femtograms?
How do I convert femtograms back to troy ounces?
How many femtograms is 100 troy ounces?
Popular weight unit conversions
Convert Troy Ounce to other weight units
Show all Troy Ounce conversions
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 oz t = 3.110348e+16 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 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.