1 nanogram
1 ngMass · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Mass
Particles & molecules
Bar length measures mass, not physical size. Both bars start at zero kilograms (kg). Pictures identify the objects only.
A little perspective
1 nanogram is approximately equal to the mass of a cell.
Mass: 1 ng; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Mass: 1 ng; defined specimen.
A 10 µm diameter teaching example, not a universal cell size.
An illustrative mass chosen for this teaching specimen, stored independently from its size. Actual composition, hydration and specimen dimensions vary.
Defined examples — our methodology
The marked mass is calibrated. Unmeasured illustration details are representative.
Measurement details
Compare 1 nanogram with the mass of a cell. The notes below explain how each value was chosen.
Mass · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Mass · defined specimen
A 10 µm diameter teaching example, not a universal cell size.
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
Mass is distinct from weight: an object’s mass stays the same as gravity changes.
Change your perspective
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
A little smaller. A little larger.