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Mass

Just how heavy is 10 pounds?

Everyday mass

10 lb

Scale
10 pounds

The quantity is exact as entered.

4.536 kgMass in kilograms
0 kg
Human arm

The human arm is the upper limb of the body, extending from the shoulder to the hand and enabling a wide range of movement and manipulation.

3.46 kgOne-arm mass in a 70 kg model in kilograms
0 kg

Bar length measures mass, not physical size. Both bars start at zero kilograms (kg). Pictures identify the objects only.

A little perspective

10 pounds is about 1.31 times the one-arm mass in a 70 kg model of the human arm.

Measurements, assumptions & sources +

10 pounds

Mass: 4.536 kg; definition.

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

NIST — SI conversion factors

Human arm

One-arm mass in a 70 kg model: 3.46 kg; representative model; range 2.5 kg–4.5 kg.

One complete arm in a defined 70 kg adult model: 75 cm from shoulder to fingertip and 3.46 kg, using published upper-arm, forearm and hand mass fractions. This is a comparison model, not a population average.

de Leva — Adjustments to Zatsiorsky-Seluyanov segment inertia parameters

The marked one-arm mass in a 70 kg model is calibrated. Unmeasured illustration details are representative.

Measurement details

Why these numbers?

Compare 10 pounds with the one-arm mass in a 70 kg model of the human arm. The notes below explain how each value was chosen.

10 pounds

4.536 kg

Mass · definition

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

Human arm

3.46 kg

One-arm mass in a 70 kg model · representative model · range 2.5 kg–4.5 kg

One complete arm in a defined 70 kg adult model: 75 cm from shoulder to fingertip and 3.46 kg, using published upper-arm, forearm and hand mass fractions. This is a comparison model, not a population average.

Comparing
Mass ↔ One-arm mass in a 70 kg model
Relative size
10 pounds is about 1.31 times the one-arm mass in a 70 kg model of the human arm. 10 pounds is approximately 31.1% greater than the one-arm mass in a 70 kg model of the human arm.

How to read the visual

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

  • We use 3.46 kg for the one-arm mass in a 70 kg model of the human arm; the recorded range is 2.5 kg–4.5 kg.
  • The one-arm mass in a 70 kg model of the human arm: This is a representative comparison value; individual specimens or conditions can vary.

Mass is distinct from weight: an object’s mass stays the same as gravity changes.

4.5359 kgkilograms
0.0045359 ttonnes

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