Where next?

Length & distance

Just how long is 2 millimetres?

Up close

2 mm

Scale
2 millimetres

The quantity is exact as entered.

2 mmLength
0 - shared origin
Copepod

A copepod is a tiny aquatic crustacean found in marine and freshwater environments, playing a key role in aquatic food webs.

2 mmDefined body length
0 - shared origin

Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. Horizontal rulers compare the selected spans; vertical brackets also identify height on the artwork. A ruler represents the selected distance or a measurement not visible in this view.

A little perspective

2 millimetres is approximately equal to the body length of a copepod.

Measurements, assumptions & sources +

2 millimetres

Length: 2 mm; definition.

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

NIST — SI conversion factors

Copepod

Defined body length: 2 mm; defined specimen; range 1.5 mm–2.5 mm.

A defined 2 mm adult calanoid copepod specimen with a 10 microgram wet mass. The body span excludes the long antennules; species, life stage and hydration produce wide variation.

Defined examples — our methodology

The marked defined body length is calibrated. Unmeasured illustration details are representative.

Measurement details

Why these numbers?

Compare 2 millimetres with the body length of a copepod. The notes below explain how each value was chosen.

2 millimetres

2 mm

Length · definition

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

Copepod

2 mm

Defined body length · defined specimen · range 1.5 mm–2.5 mm

A defined 2 mm adult calanoid copepod specimen with a 10 microgram wet mass. The body span excludes the long antennules; species, life stage and hydration produce wide variation.

Comparing
Length ↔ Defined body length
Relative size
2 millimetres is approximately equal to the body length of a copepod.

How to read the visual

The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.

  • We use 2 mm for the body length of a copepod; the recorded range is 1.5 mm–2.5 mm.
  • The body length of a copepod: This is an illustrative comparison value, not a claim that every example is the same.
  • The recorded ranges overlap, so the ordering can vary even though the central values differ.

This comparison follows the selected length only; other dimensions may differ.

0.002 mmetres
0.0065617 ftfeet
1.2427 × 10⁻⁶ mimiles
1.3369 × 10⁻¹⁴ AUastronomical units

Change your perspective

Put it next to…

Choose a suggestion to redraw the comparison, or open its page to learn what it is.

About this thing
About this thing
About this thing
About this thing
About this thing
About this thing

The full collection

Choose something to compare.

Loading compatible things…

A little smaller. A little larger.

Keep exploring length.

See all ↗

Share a little perspective.