Scale Explorer

Structures

How tall is the CN Tower?

CN Tower · Communications and observation tower, Toronto

Height to top of antenna
553.33 m 1,815.4 ft
Height of The Top observation level
447 m 1,470 ft
Height of the Main Observation Level
346 m 1,140 ft
Concrete shaft height
335 m 1,100 ft
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Human, Gateway Arch, Titanic, CN Tower drawn to the same scaleHuman: height 1.61–1.75 m (too small to see at this scale). Gateway Arch: maximum height 192 m. Titanic: length overall 269.06 m. CN Tower: height to top of antenna 553.33 m.Human: 1.61–1.75 m (too small to see at this scale)Gateway Arch: 192 mTitanic: 269.06 mCN Tower: 553.33 mCN Tower553.33 mGateway Arch192 mTitanic269.06 mHuman1.61–1.75 m · too small to see

Human is too small to see at this scale and is marked with ▲.

Everything is drawn to the same scale, standing on the same ground line. Silhouettes are simplified outlines scaled to the measured dimension. A faded outline shows the top of a size range.

Compare CN Tower with something else →

Zoom out from an average adult to the CN Tower

The CN Tower is too big to show next to an average adult in one picture, so here it is in 3 steps. Each step is drawn to its own scale and zooms out from the step before.

  1. Step 1 of 3 Human → Megalodon

    A megalodon is about 8.6–15 times as long as an average adult is tall.

    Human, Megalodon drawn to the same scaleHuman: height 1.61–1.75 m. Megalodon: maximum length (estimates) 15–24.3 m.Human: 1.61–1.75 mMegalodon: 15–24.3 mMegalodon15–24.3 mHuman1.61–1.75 m
    Step 1: Human and Megalodon at the same scale.

  2. Step 2 of 3 Megalodon → Great Pyramid of Giza

    The Great Pyramid of Giza is about 5.6–9.1 times as tall as a megalodon is long.

    Megalodon, Great Pyramid of Giza drawn to the same scaleMegalodon: maximum length (estimates) 15–24.3 m. Great Pyramid of Giza: current height ≈ 137 m.Megalodon: 15–24.3 mGreat Pyramid of Giza: ≈ 137 mGreat Pyramid of Giza≈ 137 mMegalodon15–24.3 m
    Step 2: Megalodon and Great Pyramid of Giza at the same scale.

  3. Step 3 of 3 Great Pyramid of Giza → CN Tower

    The CN Tower is about 4 times as tall as the Great Pyramid of Giza.

    Great Pyramid of Giza, CN Tower drawn to the same scaleGreat Pyramid of Giza: current height ≈ 137 m. CN Tower: height to top of antenna 553.33 m.Great Pyramid of Giza: ≈ 137 mCN Tower: 553.33 mCN Tower553.33 mGreat Pyramid of Giza≈ 137 m
    Step 3: Great Pyramid of Giza and CN Tower at the same scale.

Dimensions

MeasurementMetricImperialNotesSource
Height to top of antenna 553.33 m 1,815.4 ft From the base to the top of the antenna (1,815.5 ft) [1] [2]
Height of The Top observation level 447 m 1,470 ft Highest observation platform, above the ground (1,465 ft) [2]
Height of the Main Observation Level 346 m 1,140 ft Main Observation Level above the ground (1,136 ft) [2]
Concrete shaft height 335 m 1,100 ft Hexagonal concrete core with three curved support arms (1,100 ft) [3]

About the CN Tower

The CN Tower is a concrete communications and observation tower in Toronto, built by Canadian National from February 1973 by more than 1,500 workers over 40 months. It was finished on 2 April 1975 and opened to the public on 26 June 1976, and it remained the world's tallest freestanding structure until the Burj Khalifa overtook it. From its base to the tip of its antenna it measures 553.33 m (1,815.5 ft), with observation levels at 346 m and 447 m.

  • The shaft was cast with a slipform that climbed on hydraulic jacks and gradually narrowed to give the tower its tapered outline. [3]
  • In March 1975 a Sikorsky helicopter nicknamed Olga lifted the antenna into place in 39 pieces. [3]
  • At The Top, 447 m up, the tower can sway by almost half a metre in the wind. [2]
  • The Glass Floor gives a view 342 m straight down, and the high-speed elevators reach the Main Observation Level in 58 seconds at 22 km/h. [2]

How many fit?

  • ≈ 330 × Human · height lined up end to end match the CN Tower · height to top of antenna
  • ≈ 2.9 × Gateway Arch · maximum height lined up end to end match the CN Tower · height to top of antenna

Counts divide one sourced figure by another. "End to end" uses each object's main measurement; weight and volume rows appear only when both figures are sourced.

How it compares

  • 330× The CN Tower is about 330 times as tall as an average adult. See side by side
  • 2.9× The CN Tower is about 2.9 times as tall as the Gateway Arch. See side by side
  • 2.1× The CN Tower is about 2.1 times as tall as the Titanic is long. See side by side
  • 1.4× The CN Tower is about 1.4 times as tall as a container ship is long. See side by side
  • 1× The CN Tower is about as tall as One World Trade Center. See side by side
  • 1/1.5 The Burj Khalifa is about 1.5 times as tall as the CN Tower. See side by side

Factors compare the height to top of antenna of the CN Tower with each object’s own main measurement (height for a human). Where a size varies, the factor is given as a range.

Notes on these figures

  • A total weight of 117,910 tonnes is widely quoted, but it was not found on a fetched official page, so no mass is stored.
  • No official base width was found, so only the height axis is used for the drawing.
  • The official history page says the Burj Khalifa overtook it in 2009, while Britannica says it was surpassed by the Burj Dubai in 2007; the description gives no year.

Sources

  1. CN Tower, Common questions. Accessed 25 September 2026.
  2. CN Tower, Inspiring by day, stellar by night. Accessed 25 September 2026.
  3. CN Tower, History. Accessed 25 September 2026.
  4. Encyclopaedia Britannica, CN Tower. Accessed 25 September 2026.

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