Convert Femtogram to Picogram
Convert femtograms to picograms instantly. 1 femtogram = 0.001 picogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Picogram to Femtogram converter for the reverse conversion.
Units explained
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.
Picogram
A picogram (pg) equals 10^-15 kilogram.
From the SI prefix 'pico-' (from Spanish 'pico', a small quantity).
Single-cell biology and ultratrace chemical analysis.
The pico- prefix entered the SI in 1960.
Femtogram to Picogram conversion formula
The relationship between femtograms and picograms:
To convert femtograms to picograms, multiply the value in femtograms by 0.001. To reverse, multiply picograms by 1000.
How to use this converter
Type a value into the calculator. The result in picograms updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Picogram to Femtogram converter for the reverse direction.
Step-by-step: convert femtograms to picograms
- Write down the value in femtograms (fg).
- Multiply that value by the factor 0.001.
- The product is the equivalent value in picograms (pg).
- To reverse, multiply the picogram value by 1000.
Worked examples
Example 1 — Convert 1 fg to pg:
1 × 0.001 = 0.001 pg
Example 2 — Convert 100 fg to pg:
100 × 0.001 = 0.1 pg
Real-world example — Molecular dimensions
The diameter of small molecular structures (around 2 femtograms) is often converted into related sub-micron units when comparing measurements across different microscopy techniques or imaging modalities.
2 fg × 0.001 = 0.002 pg
Real-world example — Wavelengths across the spectrum
Optical and atomic-scale phenomena are routinely cross-converted between sub-micron units. A photon of wavelength 800 femtograms can be re-expressed in picograms for direct comparison with another instrument's calibration data sheet.
800 fg × 0.001 = 0.8 pg
Femtogram to Picogram conversion table
Standard reference values for converting femtograms to picograms:
| Femtogram [fg] | Picogram [pg] |
|---|---|
| 0.01 | 1e-5 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 30 | 0.03 |
| 40 | 0.04 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Frequently asked questions
How many picograms is 1 femtogram?
How do I convert femtograms to picograms?
How do I convert picograms back to femtograms?
How many picograms is 100 femtograms?
Popular weight unit conversions
Convert Femtogram to other weight units
Show all Femtogram conversions
Metric / SI (17 units)
Avoirdupois (15 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 fg = 0.001 pg) 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.