Convert Square Miles to Square Kilometres — Free US Area Converter for Indian Readers
Convert mi² to km² as you type.
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Square Miles
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Square Kilometers
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Method and sourcesq mi to sq km Conversion Formula
To convert square miles to square kilometres, multiply the value by 2.59. A mile is 1.60934 kilometres, and squaring that ratio gives the area factor of 2.59 — so 1 sq mi equals 2.59 sq km, or 259 hectares.
Square Miles and Square Kilometers Explained
Square Miles (mi²)
A square mile (sq mi, mi²) is the area of a square one mile — 5,280 feet — on each side, equal to 640 acres or 2.59 square kilometres (about 259 hectares). The acre will feel familiar from Indian land records; the square mile simply scales it up. It is the standard large-area unit of American geography: city land areas run from 22.8 sq mi (Manhattan) to 302.6 sq mi (New York City's land), US counties span hundreds of sq mi, and Rhode Island's 1,033.8 sq mi makes it the smallest state.
Where it is used: Square miles appear in US Census Bureau releases, national park statistics, city planning documents, and American news reports — sources that Indian students, journalists, and analysts consult regularly.
Origin: The statute mile was fixed by an English act of 1593 at 5,280 feet; squaring it later became the standard US large-area unit as federal surveys gridded the West.
Square Kilometers (km²)
A square kilometre (sq km, km²) is the metric unit for large areas: a square 1,000 metres on each side, containing 100 hectares or one million square metres. Indian geography speaks in it — Greater Mumbai spans about 603 sq km, Delhi NCT about 1,484 sq km, and the whole country roughly 32.87 lakh sq km — making it the natural unit for comparing territories at home and abroad.
Where it is used: Square kilometres are standard across India — in Survey of India maps, Census figures, district gazetteers, and school textbooks — as well as in UN databases and scientific literature on land cover and ecology.
Origin: The kilometre entered the French metric system in 1795 as 1,000 metres. India adopted the metric system through the Weights and Measures Act, 1956, and the square kilometre has since been the default large-area unit for Indian maps, censuses, and land records.
Square Miles to Square Kilometres Conversion Table
Select a value to use it in the calculator.
| Square Miles (mi²) | Square Kilometers (km²) |
|---|---|
| 0.259 km² | |
| 0.6475 km² | |
| 1.295 km² | |
| 2.59 km² | |
| 3.885 km² | |
| 5.18 km² | |
| 6.475 km² | |
| 7.77 km² | |
| 12.95 km² | |
| 19.425 km² | |
| 25.9 km² | |
| 38.85 km² | |
| 51.8 km² | |
| 64.75 km² | |
| 129.5 km² | |
| 259 km² | |
| 647.5 km² | |
| 1295 km² |
Square Kilometers to Square Miles Conversion Table
| Square Kilometers (km²) | Square Miles (mi²) |
|---|---|
| 1 km² | 0.3861003861 mi² |
| 2 km² | 0.7722007722 mi² |
| 5 km² | 1.9305019305 mi² |
| 10 km² | 3.861003861 mi² |
| 20 km² | 7.722007722 mi² |
| 25 km² | 9.6525096525 mi² |
| 50 km² | 19.305019305 mi² |
| 100 km² | 38.61003861 mi² |
| 200 km² | 77.2200772201 mi² |
| 250 km² | 96.5250965251 mi² |
| 500 km² | 193.0501930502 mi² |
| 1000 km² | 386.1003861004 mi² |
Square Miles to Square Kilometers in Everyday Objects
Common real-world examples that make Square Miles and Square Kilometers easy to picture at a glance.
| Square Miles (mi²) | Square Kilometers (km²) | |
|---|---|---|
| Manhattan land area | 22.8 mi² | 59.052 km² |
| Greater Mumbai municipal area | 61.4 mi² | 159.026 km² |
| Chandigarh union territory | 1.31 mi² | 3.3929 km² |
| Chicago city area | 2.6 mi² | 6.734 km² |
| New York City land area | 302.6 mi² | 783.734 km² |
| Nagarjunsagar-Srisailam Tiger Reserve | 220.8494208494 mi² | 572 km² |
| Delhi NCT area | 1033.8 mi² | 2677.542 km² |
When You Need Square Miles to Square Kilometers Conversions
Comparing City Footprints
Chicago's 227.7 sq mi converts to 589.74 sq km — almost exactly Greater Mumbai's 603 sq km — a comparison that instantly shows Indian readers how the two sprawls stack up.
Wildfire News Reporting
US agencies size fires in square miles; when Californian headlines say 50 sq mi burnt, that is 129.5 sq km — figures Indian newsrooms need to convert before carrying the story.
National Park Statistics
Yellowstone's 3,471 sq mi becomes about 8,990 sq km, letting travel writers rank it against Kaziranga's 430 sq km and the Sundarbans for Indian wildlife features.
Land Deals and Real Estate Comparisons
A US ranch listed at 12 sq mi works out to about 31.08 sq km (3,108 hectares), helping NRIs compare per-hectare rates with Indian farmland prices quoted in ₹ per acre.
Related Area Conversions
How to Use
-
1
Enter the Area in sq mi
Type the square-mile figure from the US source — for example, 22.8 sq mi for Manhattan's land area
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2
See the Square Kilometres
The result appears instantly: 22.8 sq mi = 59.05 sq km — a touch smaller than Mumbai's island city, so Indian readers grasp the scale at once
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3
Copy or Reverse
Copy the figure into your assignment, article, or report and do the needful, or click Swap to convert a sq km statistic such as Bengaluru's 741 sq km back into sq mi
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4
Check the Table
Scan the table for anchors like 5 sq mi = 12.95 sq km and 100 sq mi = 259 sq km — close to four-fifths of Pune city — while you write
Why Use Be Converter?
Instant Conversion
Get square miles in square kilometres in real time as you type — handy for students, editors, and analysts checking US figures against Indian metro areas on the fly
Precision Guaranteed
Applies the exact 2.59 factor implied by the mile's 1.60934 km definition in this tool's data — no rounded textbook shortcuts, so your assignment or report stands up to scrutiny
Handy Reference Table
Territory sizes at a glance — 1 sq mi = 2.59 sq km, 50 sq mi = 129.5 sq km, 500 sq mi = 1,295 sq km — perfect for matching US city stats to Indian metro figures
Swap with One Click
Toggle back to sq km to sq mi instantly when an Indian figure such as Hyderabad's 650 sq km needs to appear in an American report
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No registration required. Convert every city, district, national park, and country figure you research — always free
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Frequently Asked Questions
How many square kilometres are in 1 square mile?
How do I convert 5 square miles to sq km?
What is 100 sq mi in square kilometres?
Is a square mile bigger than a square kilometre?
Why do US geography statistics use square miles?
How many sq km is Manhattan?
How many sq km is 50 square miles?
How do I convert sq mi to sq km precisely?
About Square Miles to Square Kilometres Converter
Our free online square miles to square kilometres converter translates American land statistics into units every Indian reader knows. US news reports, Census releases, national park factsheets, and ranch listings quote areas in square miles, while Indian sources — from the Census of India to district land records — work in square kilometres, hectares, and acres. Whether you are a student preparing for UPSC, a journalist filing copy on California wildfires, or an analyst comparing US metros with Mumbai and Delhi, this tool applies the exact factor of 2.59 sq km per sq mi to every figure you enter.
Expert Tips for sq mi to sq km Conversion
The 2.59 factor is a squared length ratio: 1.60934 kilometres per mile, squared, gives 2.59 — so lengths convert by 1.60934 while areas convert by 2.59.
Build bridges with Indian metros: Greater Mumbai's 603 sq km is almost exactly Chicago's 227.7 sq mi, Bengaluru's 741 sq km is just over New York's 302.6 sq mi of land, and Delhi NCT's 1,484 sq km is roughly 573 sq mi.
For wildlife comparisons, convert first: Yellowstone at 3,471 sq mi is about 8,990 sq km — more than twice Nagarjunsagar-Srisailam, India's largest tiger reserve (around 3,728 sq km).
Mental shortcut: multiply sq mi by 2.6 — a 320 sq mi US county gives 832 sq km against the exact 828.8, close enough for everyday conversation.
Land vs total area matters: US figures often exclude water (NYC land is 302.6 sq mi), while Indian district and metro figures may include lakes and rivers — always convert on the same basis on both sides.
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