Convert Exagram to Femtogram
Convert exagrams to femtograms instantly. 1 exagram = 1e+33 femtogram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Femtogram to Exagram converter for the reverse conversion.
Units explained
Exagram
An exagram (Eg) equals 10^15 kilograms, or one quintillion grams.
From the SI prefix 'exa-' (from Greek 'hex', six, denoting the sixth power of 1000).
Confined to planetary- and atmospheric-scale mass discussions; never used in daily measurement.
The exa- prefix was adopted by the General Conference on Weights and Measures (CGPM) in 1975.
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.
Exagram to Femtogram conversion formula
The relationship between exagrams and femtograms:
To convert exagrams to femtograms, multiply the value in exagrams by 1e+33. To reverse, multiply femtograms by 1e-33.
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 Exagram converter for the reverse direction.
Step-by-step: convert exagrams to femtograms
- Write down the value in exagrams (Eg).
- Multiply that value by the factor 1e+33.
- The product is the equivalent value in femtograms (fg).
- To reverse, multiply the femtogram value by 1e-33.
Worked examples
Example 1 — Convert 1 Eg to fg:
1 × 1e+33 = 1e+33 fg
Example 2 — Convert 100 Eg to fg:
100 × 1e+33 = 1e+35 fg
Exagram to Femtogram conversion table
Standard reference values for converting exagrams to femtograms:
| Exagram [Eg] | Femtogram [fg] |
|---|---|
| 0.01 | 1e+31 |
| 0.1 | 1e+32 |
| 1 | 1e+33 |
| 2 | 2e+33 |
| 3 | 3e+33 |
| 4 | 4e+33 |
| 5 | 5e+33 |
| 10 | 1e+34 |
| 20 | 2e+34 |
| 30 | 3e+34 |
| 40 | 4e+34 |
| 50 | 5e+34 |
| 100 | 1e+35 |
| 500 | 5e+35 |
| 1000 | 1e+36 |
Frequently asked questions
How many femtograms is 1 exagram?
How do I convert exagrams to femtograms?
How do I convert femtograms back to exagrams?
How many femtograms is 100 exagrams?
Popular weight unit conversions
Convert Exagram to other weight units
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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 Eg = 1e+33 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.