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Buildings & landmarks

How tall is the Gateway Arch?

The Gateway Arch is 192 m · 630 ft tall.

Gateway Arch at true scale

  1. Gateway Arch 192 m · 630 ft
  2. Elizabeth Tower 96 m · 315 ft
  3. Apollo–Saturn V 110.6 m · 363 ft
  4. Blue whale up to 33.5 m · 110 ft

Gateway Arch (blue) beside the Elizabeth Tower, the Apollo–Saturn V and a blue whale, all on one scale.

The National Park Service gives the Gateway Arch in St Louis a maximum height of 630 ft (192 m) — exactly the same as the distance between the outer edges of its legs. Each leg is 54 ft wide at the base.

Compared with familiar things

  • The Gateway Arch is about 2.0× the Elizabeth Tower (96 m · 315 ft).
  • The Gateway Arch is about 1.7× the Apollo–Saturn V (110.6 m · 363 ft).
  • The Gateway Arch is about 5.7× a blue whale (up to 33.5 m · 110 ft).
  • The Gateway Arch is about 6.9× a basketball court (28 m · 91.9 ft).

Can you guess it by eye?

Play five comparisons featuring the Gateway Arch: resize each object beside a fixed reference, then see how close you were. No sign-up needed.

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What is measured

Maximum height: 192 m · 630 ft. NPS fact sheet: maximum height 630 ft (192 m); also 630 ft between the outer legs.

Source: NPS — Gateway Arch Fact Sheet. Checked 2026-09-28. The silhouette is scaled so this measurement is exact; its other proportions are illustrative.