Units made clear

Pound vs kilogram

What are they, and what does the difference actually look like?

Two things. One honest scale.

Meet the pair

What these two things are

1 pound

The quantity is exact as entered.

453.6 gMass

1 kilogram

The quantity is exact as entered.

1 kgMass

1 kilogram has about 2.2 times the mass of 1 pound.

Linear measure
MASS453.6 g1 kg
01
1 pound453.6 gMass
02
1 kilogram1 kgMass
Bar length measures mass, not physical size.
Measurements, assumptions & sources +

1 pound

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

NIST — SI conversion factors

1 kilogram

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

NIST — SI conversion factors

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Measurement details

Why these numbers?

The visual compares mass with mass. The records below preserve each value’s basis and caveats.

1 pound

453.6 g

Mass · definition

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

1 kilogram

1 kg

Mass · definition

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

Comparing
Mass ↔ Mass
Relative size
1 kilogram is larger on this measurement by a factor of about 2.2. 1 kilogram's selected measurement is approximately 120% greater than 1 pound's.

How to read the visual

The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.

One avoirdupois pound is exactly 0.45359237 kilograms. Troy ounces and troy pounds are not used here.

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