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Mass

Just how heavy is 20 grams?

In your hand

20 g

Scale
20 grams

The quantity is exact as entered.

0.02 kgMass in kilograms
0 kg
Squash ball

A squash ball is a small, hollow rubber ball used in the sport of squash.

0.024 kgRepresentative mass 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

The mass of a squash ball is about 1.2 times 20 grams.

Measurements, assumptions & sources +

20 grams

Mass: 20 g; definition.

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

NIST — SI conversion factors

Squash ball

Representative mass: 24 g; representative; range 23 g–25 g.

A representative competition squash ball about 40 mm in diameter and 24 g. Approved ball specifications permit small tolerances and grades use different rebound markings.

World Squash — Squash ball specifications

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

Measurement details

Why these numbers?

Compare 20 grams with the mass of a squash ball. The notes below explain how each value was chosen.

20 grams

20 g

Mass · definition

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

Squash ball

24 g

Representative mass · representative · range 23 g–25 g

A representative competition squash ball about 40 mm in diameter and 24 g. Approved ball specifications permit small tolerances and grades use different rebound markings.

Comparing
Mass ↔ Representative mass
Relative size
The mass of a squash ball is about 1.2 times 20 grams. The mass of a squash ball is approximately 20% greater than 20 grams.

How to read the visual

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

  • We use 24 g for the mass of a squash ball; the recorded range is 23 g–25 g.
  • The mass of a squash ball: 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.

0.02 kgkilograms
0.044092 lbpounds
2 × 10⁻⁵ ttonnes

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