ScaleTrip

Turn a number into a real-world scale.

How wide is Earth?

ScaleTrip uses 12,742 kilometres as Earth's rounded mean diameter. Diameter is the straight line through Earth's centre from one side of the surface to the other.

Earth diameter12,742 km

The distance through Earth's centre from one side to the other.

Explore the scale
12,742 km

The references just below and above

Nearby references are selected by logarithmic distance, not linear spacing.

How long would this journey take?

Calculated as uninterrupted travel at representative average cruising speeds.

Real travel time varies with route, stops, weather and operating conditions.

Objects move along logarithmic spacing, while size is compressed from the real ratio to remain legible.

Artwork and diagram notes

Object, landmark, planet and cosmic-scale artwork is original AI-generated imagery made for ScaleTrip. Maps use public-domain Natural Earth boundaries. Illustrations stay recognizable through logarithmic visual compression; they are not literal scale drawings.

Direct answer

How wide is Earth?

ScaleTrip uses 12,742 kilometres as Earth's rounded mean diameter. Diameter is the straight line through Earth's centre from one side of the surface to the other.

km12,742
m12,742,000
mi7,917.5117

Closest ScaleTrip references

  1. Earth diameter12,742 km · 1×

    The distance through Earth's centre from one side to the other.

  2. Seoul–London8,850 km · 1.44×

    A long-distance route following Earth's curved surface.

  3. Earth radius6,371 km · 2×

    Earth's mean radius from its centre to the surface.

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Travel time at constant speed

ModeRepresentative speedCalculated time
Walking5 km/h106 days
Car100 km/h5.3 days
High-speed train300 km/h1.8 days
Airliner900 km/h14 hr
Spacecraft28,000 km/h27 min

Real travel time varies with route, stops, weather and operating conditions.