Mass

Just how heavy is 5 stone?

Everyday mass

5 st

31.751 kgkilograms
70 lbpounds
0.031751 ttonnes
Linear measure
MASS31.75 kg32 kg
01
5 stone31.75 kgMass · definition
02
Human-powered aircraft32 kgApproximate empty mass · representative · range 30 kg–35 kg
Bar length measures mass, not physical size.

A little perspective

The approximate empty mass of Human-powered aircraft is about 1.01 times the mass of 5 stone.

Measurements, assumptions & sources +

5 stone

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

NIST — SI conversion factors

Human-powered aircraft

A Gossamer Albatross-style human-powered aircraft with NASA's quoted 94 ft (28.7 m) span, approximately 10 m length, 32 kg empty mass and a representative 5 m/s flight speed. The pilot is excluded from empty mass.

NASA — Gossamer Albatross

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

Measurement details

Why these numbers?

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

5 stone

31.75 kg

Mass · definition

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

Human-powered aircraft

32 kg

Approximate empty mass · representative · range 30 kg–35 kg

A Gossamer Albatross-style human-powered aircraft with NASA's quoted 94 ft (28.7 m) span, approximately 10 m length, 32 kg empty mass and a representative 5 m/s flight speed. The pilot is excluded from empty mass.

Comparing
Mass ↔ Approximate empty mass
Relative size
Human-powered aircraft is larger on this measurement by a factor of about 1.01. Human-powered aircraft's selected measurement is approximately 0.783% greater than 5 stone's.

How to read the visual

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

  • Human-powered aircraft uses a 32 kg central value within a recorded range of 30 kg–35 kg.
  • Human-powered aircraft is labelled representative; treat the displayed value as a comparison anchor rather than false precision.
  • The recorded ranges overlap, so the ordering can vary even though the central values differ.

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