Scale Explorer

Nature

How big is Niagara's Horseshoe Falls?

Niagara Falls · Horseshoe (Canadian) Falls and American Falls, Niagara River

Horseshoe Falls height
≈ 57 m 190 ft approx.
Horseshoe Falls crest length
≈ 670 m 2,200 ft approx.
American Falls height
21–34 m 69–110 ft range
American Falls crest length
≈ 260 m 850 ft approx.
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Human, Boeing 747, Coast redwood, Niagara Falls drawn to the same scaleHuman: height 1.61–1.75 m. Boeing 747: length 70.67–76.25 m. Coast redwood: tallest known tree (hyperion) 116.07 m. Niagara Falls: horseshoe falls height ≈ 57 m.Human: 1.61–1.75 mBoeing 747: 70.67–76.25 mCoast redwood: 116.07 mNiagara Falls: ≈ 57 mCoast redwood116.07 mNiagara Falls≈ 57 mBoeing 74770.67–76.25 mHuman1.61–1.75 m
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.

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Zoom out from an average adult to Niagara's Horseshoe Falls

Niagara's Horseshoe Falls 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 → Gateway Arch

    The Gateway Arch is about 7.9–13 times as tall as a megalodon is long.

    Megalodon, Gateway Arch drawn to the same scaleMegalodon: maximum length (estimates) 15–24.3 m. Gateway Arch: maximum height 192 m.Megalodon: 15–24.3 mGateway Arch: 192 mGateway Arch192 mMegalodon15–24.3 m
    Step 2: Megalodon and Gateway Arch at the same scale.

  3. Step 3 of 3 Gateway Arch → Niagara Falls

    The Gateway Arch is about 3.4 times as tall as Niagara's Horseshoe Falls is high.

    Gateway Arch, Niagara Falls drawn to the same scaleGateway Arch: maximum height 192 m. Niagara Falls: horseshoe falls height ≈ 57 m.Gateway Arch: 192 mNiagara Falls: ≈ 57 mGateway Arch192 mNiagara Falls≈ 57 m
    Step 3: Gateway Arch and Niagara Falls at the same scale.

Dimensions

MeasurementMetricImperialNotesSource
Horseshoe Falls height ≈ 57 m ≈ 190 ft Average drop of the Canadian Horseshoe Falls into the Lower Niagara River (188 ft). Approximate [1]
Horseshoe Falls crest length ≈ 670 m ≈ 2,200 ft Width of the Horseshoe Falls crest line (2,200 ft). Approximate [1]
American Falls height 21–34 m 69–110 ft Drop of the American Falls (70-110 ft); varies along the crest because of the talus rock pile at its base (per Destination Niagara USA). Range: varies [1]
American Falls crest length ≈ 260 m ≈ 850 ft Width of the American Falls crest line (850 ft). Approximate [1]

About Niagara's Horseshoe Falls

Niagara Falls is a group of waterfalls on the Niagara River, on the border between Canada and the United States. The Horseshoe Falls, mostly on the Canadian side, is the largest: its crest is about 670 m long and the water drops an average of 57 m. The American Falls has a shorter crest, and its visible drop is smaller because a pile of fallen rock (talus) sits at its base. A 1950 treaty between Canada and the United States sets how much water must go over the falls, because the rest can be diverted for hydroelectric power.

  • Under a 1950 treaty between Canada and the United States, the flow over the falls must be at least 100,000 cubic feet per second (2,832 cubic metres per second) during daylight hours of the tourist season (April 1 to October 31). [1]
  • At all other times the flow over the falls must be at least 50,000 cfs (1,416 cubic metres per second); water above the required flows may be diverted for power generation. [1]
  • More than 168,000 cubic metres (6 million cubic feet) of water go over the crest line every minute during peak daytime tourist hours. [1]
  • The plunge pool below the Horseshoe Falls is 35 metres (100 ft) deep. [1]
  • New York State's Niagara Falls State Park puts the flow at 75,750 gallons per second over the American and Bridal Veil Falls and 681,750 gallons per second over the Horseshoe Falls. [2]
  • Destination Niagara USA says about 90% of the river's flow goes over the Horseshoe Falls, and gives the Horseshoe Falls a height of 188 feet and a 2,200-foot crest line. [3]

How many fit?

  • ≈ 34 × Human · height lined up end to end match the Niagara Falls · horseshoe falls height

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

  • 34× Niagara's Horseshoe Falls is about 34 times as high as an average adult is tall. See side by side
  • 1/2.2 SpaceX's Starship is about 2.2 times as tall as Niagara's Horseshoe Falls is high. See side by side
  • 1/2.4 The Great Pyramid of Giza is about 2.4 times as tall as Niagara's Horseshoe Falls is high. See side by side
  • 1/5.9 An aircraft carrier is about 5.9 times as long as Niagara's Horseshoe Falls is high. See side by side
  • 1/7.8 The Empire State Building is about 7.8 times as tall as Niagara's Horseshoe Falls is high. See side by side
  • 1/15 The Burj Khalifa is about 15 times as tall as Niagara's Horseshoe Falls is high. See side by side

Factors compare the horseshoe falls height of Niagara's Horseshoe Falls 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

  • Flow over the falls is regulated and changes with season and time of day. The treaty figures are minimum flows over the falls, not the river's total natural flow.
  • Destination Niagara USA gives the American Falls crest line as about 1,000 feet, longer than Niagara Parks' 850 ft (260 m). The Niagara Parks Commission figure is kept; the difference may come from where the crest is taken to end.
  • The Bridal Veil Falls, a small separate fall beside the American Falls, is not measured separately here.
  • The drawing is scaled to the Horseshoe Falls average drop of 57 m. Its width is illustrative: the 670 m crest line follows a curve.

Sources

  1. Niagara Parks Commission, Niagara Falls Geology Facts & Figures. Accessed 24 September 2026.
  2. Niagara Falls State Park (New York), Amazing Niagara Facts. Accessed 24 September 2026.
  3. Destination Niagara USA, Guide to Niagara Falls: Horseshoe, American & Bridal Veil. Accessed 24 September 2026.

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