Suggested Metric Units

Xenna

Value: 10²⁷ = Octillion = 1000⁹
Greek for "nine"
Abbreviation: X
Uses
- Volume of some galaxies is in the Xm³ range
- 1 Xennasecond = 32 Quintillion years
- Jupiter’s mass ≈ 1.90164Xg
- In E=mc², objects with a mass of 1.1127*10¹⁰kg is 1XN

Weka

Value: 10³⁰ = Nonillion = 1000¹⁰
Greek for "ten"
Abbreviation: W
Uses
- 1Ws = 32 Sextillion years
- Volume of some galaxies is in the Wm³ range
- Some stars have a mass of 1Wg
- In E=mc², objects with a mass of 1.1127*10¹³kg is 1WN

Vendeka

Value: 10³³ = Decillion = 1000¹¹
Greek for "eleven"
Abbreviation: V
Uses
- Sun’s mass = 1.99Vg
- 1Vs = 32 Septillion years
- Volume of some galaxy clusters is in the Vm³ range
- In E=mc², objects with a mass of 1.1127*10¹⁶kg is 1VN

Udeka

Value: 10³⁶ = Duodecillion = 1000¹²
Greek for "twelve"
Abbreviation: U
Uses
- Mass of some stars is in the Ug range
- 1Us = 32 Octillion years
- Volume of some galaxy clusters is in the Um³ range
- Objects in the kilogram range have a mass of 10Uev

Xenno

Value: 10^-27 = Octillionth = 1000^-9
Greek for "0.000001"
Abbreviation: x
Uses
- Nucleon Mass ≈ 1.67xg
- 1 Dalton = 1.6605xg
- Some molecules weigh in the xennogram range
- Electron mass = 0.09109xg
- Carbon atom’s mass ≈ 20xg

Weko

Value: 10^-30 = Nonillionth = 1000^-10
Greek for "0.0000001"
Abbreviation: w
Uses
- Gamma-ray photon mass = 2.2wg
- Volume of subatomic particles
- Mass of a moving beta-ray ≈ 1wg

Vendeko

Value: 10^-33 = Decillionth = 1000^-11
Greek for "0.00000001"
Abbreviation: v
Uses
- Planck’s Constant = 0.663vW
- UV photon mass = 9vg
- X-ray photon mass = 20vg

Udeko

Value: 10^-36 = Duodecillionth = 1000^-12
Greek for "0.000000001"
Abbreviation: u
Uses
- Plank's Constant = 663uv
- Mass of a visible light photon = 5.4ug (violet)
- Mass of an orange light photon = 3.68ug
- Mass of an infrared photon = 200ug