Square Kilometres to Square Miles Converter for Canadian Users
Convert km² to mi² as you type.
Canadian Area Converter - Metric & Imperial UnitsReference for one unit; displayed values may be rounded.
Square Kilometers
Use a dot or comma for decimals, without thousands separators.
Square Miles
Display rounding does not improve the accuracy of your original measurement. Very large or very small results use scientific notation.
Method and sourcesq km to sq mi Conversion Formula
To convert square kilometres to square miles, multiply the value by 0.3861. One kilometre is 0.621371 miles, and squaring that ratio yields the 0.3861 area factor.
Square Kilometers and Square Miles Explained
Square Kilometers (km²)
A square kilometre (sq km, km²) is the metric unit for large territories: a square 1,000 metres per side, equal to 100 hectares or 0.3861 square miles. It sizes Canada's places in official reference works — city centres of tens of sq km, the Great Lakes in the tens of thousands, small provinces such as PEI at 5,660 sq km, and entire regions beyond that.
Where it is used: Square kilometres are Canada's official standard for geography, demography, ecology, and administration — Statistics Canada publishes all municipal and provincial areas this way — and they appear in international datasets from the UN downward.
Origin: The kilometre was formalized in France in 1795 as 1,000 metres; Canada adopted the metric system in the 1970s, and its square took over large-area reporting from the old imperial measurements.
Square Miles (mi²)
A square mile (sq mi, mi²) is the Anglo-American large-area unit: a square one statute mile — 5,280 ft — on each side, equal to 640 acres or 2.59 sq km. Prairie farmers know it well: the Dominion Land Survey carved the West into one-square-mile sections, and American geography still runs on it, from Manhattan's 22.8 sq mi of land to Yellowstone's 3,471 sq mi.
Where it is used: Square miles anchor US Census figures, state and county records, national park statistics, and pre-metric Canadian land documents, where a quarter section equals about 64.7 hectares.
Origin: An English statute of 1593 fixed the mile at 5,280 feet; surveyors on both sides of the border later laid out the land in square-mile sections — Canada's Dominion Land Survey and the American Public Land Survey — embedding the unit in Prairie and US geography alike.
Square Kilometres to Square Miles Conversion Table
Select a value to use it in the calculator.
| Square Kilometers (km²) | Square Miles (mi²) |
|---|---|
| 0.0965250965 mi² | |
| 0.1930501931 mi² | |
| 0.3861003861 mi² | |
| 0.5791505792 mi² | |
| 0.7722007722 mi² | |
| 0.9652509653 mi² | |
| 1.9305019305 mi² | |
| 2.8957528958 mi² | |
| 3.861003861 mi² | |
| 5.7915057915 mi² | |
| 7.722007722 mi² | |
| 9.6525096525 mi² | |
| 19.305019305 mi² | |
| 28.9575289575 mi² | |
| 38.61003861 mi² | |
| 57.9150579151 mi² | |
| 77.2200772201 mi² | |
| 96.5250965251 mi² | |
| 193.0501930502 mi² | |
| 386.1003861004 mi² |
Square Miles to Square Kilometers Conversion Table
| Square Miles (mi²) | Square Kilometers (km²) |
|---|---|
| 1 mi² | 2.59 km² |
| 2 mi² | 5.18 km² |
| 5 mi² | 12.95 km² |
| 10 mi² | 25.9 km² |
| 20 mi² | 51.8 km² |
| 25 mi² | 64.75 km² |
| 50 mi² | 129.5 km² |
| 100 mi² | 259 km² |
| 200 mi² | 518 km² |
| 250 mi² | 647.5 km² |
| 500 mi² | 1295 km² |
Square Kilometers to Square Miles in Everyday Objects
Common real-world examples that make Square Kilometers and Square Miles easy to picture at a glance.
| Square Kilometers (km²) | Square Miles (mi²) | |
|---|---|---|
| Toronto city proper | 105.4 km² | 40.694980695 mi² |
| Banff National Park in Alberta | 592 km² | 228.5714285714 mi² |
| Stanley Park in Vancouver | 6.8 km² | 2.6254826255 mi² |
| Charlottetown, PEI | 3.41 km² | 1.3166023166 mi² |
| Jasper National Park in Alberta | 160 km² | 61.7760617761 mi² |
| Kingston, Ontario | 316 km² | 122.0077220077 mi² |
| High Park in Toronto | 1.42 km² | 0.5482625483 mi² |
When You Need Square Kilometers to Square Miles Conversions
Reading American City Profiles
Chicago's 606 sq km converts to 234 sq mi, letting a Canadian weigh it against Toronto's 630 sq km (243.24 sq mi) before a cross-border move.
National Park Comparisons
Banff National Park at 6,641 sq km is 2,564.1 sq mi, while Jasper's 10,878 sq km is 4,200 sq mi — a fair comparison once both figures wear the same unit.
Province Size for American Readers
PEI's 5,660 sq km becomes 2,185.3 sq mi, instantly graspable as a province bigger than Rhode Island (1,545 sq mi) but smaller than Delaware (2,489 sq mi).
Prairie Land and Rural Planning
A 25 sq km subdivision is 9.65 sq mi on the rural municipality map — and each Prairie survey section remains exactly one square mile, or 2.59 sq km, with a quarter section about 64.7 hectares.
Related Area Conversions
How to Use
-
1
Enter the Area in sq km
Type the square-kilometre figure from the metric source — for example, 630 sq km for the city of Toronto
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2
See the Square Miles
The result appears instantly: 630 sq km = 243.24 sq mi, the figure American readers expect
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3
Copy or Reverse
Copy the result into your article, or click Swap to translate a US statistic back into sq km for a Canadian report
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4
Check the Table
Scan the table for anchors like 50 sq km = 19.31 sq mi and 250 sq km = 96.53 sq mi while comparing places on both sides of the border
Why Use Be Converter?
Instant Conversion
Get square kilometres in square miles in real time as you type — ideal while cross-checking Statistics Canada tables against US news reports
Precision Guaranteed
Applies the exact 0.3861 factor implied by the 0.621371 mi per km ratio in this tool's data — consistent with its sq mi counterpart
Handy Reference Table
Territory figures at a glance — 10 sq km = 3.861 sq mi, 100 sq km = 38.61 sq mi, 1,000 sq km = 386.1 sq mi — for instant context
Swap with One Click
Flip back to sq mi to sq km instantly when an American figure needs to appear in a metric report — handy for cross-border work between Canada and the US
Free & Unlimited
No registration, no caps. Convert every city, lake, national park, and Prairie quarter-section figure you research — always free
Completely Private
All calculations run locally in your browser. Your geography research never leaves your device
Frequently Asked Questions
How many square miles are in 1 square kilometre?
How do I convert 10 sq km to sq mi?
What is 100 sq km in square miles?
Is a square kilometre smaller than a square mile?
Why do Canadian sources use sq km while US sources use square miles?
How many sq mi is Toronto?
How many square miles is 50 sq km?
How many sq km are in 1 square mile?
About the Square Kilometres to Square Miles Converter
Our free online square kilometres to square miles converter bridges the two worlds Canadians live between. Canada officially measures in square kilometres — think Statistics Canada tables, park signage, and school geography — yet square miles still show up in American news, cross-border business, and old Prairie land survey records. Whether you are writing travel content, comparing property listings on either side of the border, or studying for an exam, this tool applies the exact factor of 0.3861 sq mi per sq km on every keystroke.
Expert Tips for sq km to sq mi Conversion
The factor is the square of the length ratio: 1 km = 0.621371 mi, and 0.621371² = 0.3861 — lengths and areas never share the same conversion number.
Keep anchors handy: Toronto 630 sq km = 243.24 sq mi, Montreal 365 sq km = 140.93 sq mi, and Vancouver 115 sq km = 44.4 sq mi.
For parks and provinces, convert before comparing: Banff National Park (6,641 sq km) is 2,564.1 sq mi — comfortably larger than the entire province of Prince Edward Island (5,660 sq km, 2,185.3 sq mi).
Mental shortcut: divide sq km by 2.6 — a 200 sq km metro area gives roughly 77 sq mi against the exact 77.22, plenty close for conversation.
Density conversions need the same factor: 8,000 people per sq km is 8,000 ÷ 0.3861 ≈ 20,720 per sq mi, the form American urban-planning debates use.
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