City Map Compare/Chennai vs Sydney
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5 km
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Chennai

427 km²

Sydney

12,368 km²

Chennai vs Sydney - City Size Comparison

Chennai vs Sydney - City Size Comparison

Chennai

India

Area427 km²
Population6.60M
Density15,457 /km²
Elevation6 m
Founded1639
Sydney

Australia

Area12,368 km²
Population5.31M
Density429 /km²
Elevation58 m
Metro Pop.5.3M
Founded1788
Climatehumid subtropical

Area Comparison

Chennai is 29.0x smaller than Sydney

Population Comparison

Chennai has 1.2x more people than Sydney

Is Chennai Bigger Than Sydney?

Yes — Sydney is 29.0x larger than Chennai by area. Sydney spans 12,368 km² (4,775 mi²) while Chennai covers 427 km² (165 mi²) — a difference of 11,941 km². You could fit Chennai inside Sydney approximately 28 times.

To put Chennai's size in perspective, its area of 427 km² is about 1.4x smaller than Seoul. Meanwhile, Sydney at 12,368 km² is about 2.0x the size of Shanghai.

In more relatable units, Chennai's 427 km² is about 60,000 American football fields, 130 times the area of Central Park, or 7 times the area of Manhattan. Sydney works out to about 1,700,000 American football fields, 120 times the area of Paris, or 100 times the area of San Francisco.

About Chennai

Chennai, also known as Madras, is the capital and largest city of Tamil Nadu, the southernmost state of India. It is located on the Coromandel Coast of the Bay of Bengal. As per the 2011 Indian census, Chennai is the sixth-most-populous city in India and forms the fourth-most-populous urban agglomeration. The city is coterminous with Chennai district, which together with the adjoining suburbs constitutes the Chennai Metropolitan Area, one of the largest metropolitan areas of India.

Known as "Madras", Chennai covers 427 km² with a population of 6.6 million. The city was established in 1639. Chennai is known for Marina Beach, Kapaleeshwarar Temple, Fort St. George, among other attractions.

Chennai, formerly Madras, is the capital of Tamil Nadu and the sixth-most-populous city in India.

About Sydney

Sydney is the capital city of the state of New South Wales, and is the most populous city in Australia. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about 80 kilometres (50 mi) from the Pacific Ocean in the east to the Blue Mountains in the west, and about 80 kilometres (50 mi) from Ku-ring-gai Chase National Park and the Hawkesbury River in the north and north-west, to the Royal National Park and Macarthur in the south and south-west.

Nicknamed "Sydneysiders", Sydney has an area of 12,368 km² and is home to 5.3 million people. The city dates back to 1788. Visitors come for Sydney Opera House, Sydney Harbour Bridge, Bondi Beach, and much more. Getting around is easy with the Sydney Trains.

Sydney stretches roughly 80 km from the Pacific Ocean in the east to the Blue Mountains in the west.

Population Density

Chennai has a population density of 15,457 people per km² — an extremely dense urban environment. Sydney, with 429 people per km², is a low-density, sprawling urban area. Chennai is dramatically more crowded, with 36.0x the population density.

Key Differences at a Glance

Size Ratio

Chennai fits inside Sydney ~28 times

Density Gap

Chennai is 36.0x more densely populated

History

Chennai is ~149 years older

Cities Similar in Size to Chennai

Chennai covers 427 km². Cities with a similar urban footprint include Vienna (415 km²), Oslo (454 km²), Denver (401 km²), Portland (376 km²), or Philadelphia (370 km²).

Cities Similar in Size to Sydney

Sydney covers 12,368 km². Cities with a similar urban footprint include Chengdu (14,378 km²), Xi'an (10,097 km²), Melbourne (9,993 km²), Brisbane (15,826 km²), or Beijing (16,411 km²).

Related Comparisons

Frequently Asked Questions

Is Chennai bigger than Sydney?
Sydney is 29.0 times larger than Chennai by area. Sydney covers 12,368 km² while Chennai spans 427 km², a difference of 11,941 km².
How many times does Chennai fit inside Sydney?
Chennai (427 km²) fits inside Sydney (12,368 km²) approximately 28 times. That means Sydney is 29.0x the area of Chennai.
What is the population difference between Chennai and Sydney?
Chennai has approximately 6.6 million people, while Sydney has about 5.3 million. Chennai has 1.3 million more residents.
Which city is more densely populated, Chennai or Sydney?
Chennai is more densely populated with 15,457 people per km², compared to 429 people per km².
Which city is older, Chennai or Sydney?
Chennai is older, founded around 1639, while Sydney was established around 1788 — a difference of about 149 years.
How does the map comparison work?
Our synchronized map comparison tool displays both cities at the same zoom level. When you zoom in or out on one map, the other automatically adjusts to maintain the same scale, allowing you to directly compare the relative sizes of both cities.
Can I compare other cities?
Yes! Use the city selectors at the top of the page to choose any two cities from our database of 50+ major cities worldwide, or enter custom coordinates for any location.

Distance Between Chennai and Sydney

The straight-line distance from Chennai to Sydney is 9,125 km (5,670 miles), with an estimated flight time of ~11h 14m.

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