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Mass

Just how heavy is 1 stone?

Everyday mass

1 st

Scale
1 stone

The quantity is exact as entered.

6.35 kgMass in kilograms
0 kg
Red fox

The red fox is a wild member of the dog family, recognised for its reddish fur and bushy tail, and is native to much of the Northern Hemisphere.

6 kgMass 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

1 stone is about 1.06 times the mass of a red fox.

Measurements, assumptions & sources +

1 stone

Mass: 6.35 kg; definition.

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

NIST — SI conversion factors

Red fox

Mass: 6 kg; defined specimen.

A chosen 70 cm body, excluding the tail, and 6 kg mass.

Defined examples — our methodology

The marked mass is calibrated. Unmeasured illustration details are representative.

Measurement details

Why these numbers?

Compare 1 stone with the mass of a red fox. The notes below explain how each value was chosen.

1 stone

6.35 kg

Mass · definition

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

Red fox

6 kg

Mass · defined specimen

A chosen 70 cm body, excluding the tail, and 6 kg mass.

Comparing
Mass ↔ Mass
Relative size
1 stone is about 1.06 times the mass of a red fox. 1 stone is approximately 5.84% greater than the mass of a red fox.

How to read the visual

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

  • The mass of a red fox: This is an illustrative comparison value, not a claim that every example is the same.

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

6.3503 kgkilograms
14 lbpounds
0.0063503 ttonnes

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