Square Kilometer to Square Meter Converter
Area · unit-converter
Convert Square Kilometer to Square Meter with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use square-meter-based definitions (international feet / yard standards, acre, hectare, and regional units like pyeong/tsubo).
Calculator
From: Square Kilometer (km2)
To: Square Meter (m2)
About Square Kilometer
The square kilometer is a metric unit equal to one million square meters. It is standard for city sizes, large properties, and regional planning in metric countries.
About Square Meter
The square meter is the SI derived unit of area. Floor plans, building codes, and science typically use square meters.
How to convert square kilometers to square meters
1 square kilometer is equal to 1000000 square meter:
1 km2 = (1000000 m² ÷ 1 m²) m2 = 1000000 m2
1 km² = 1,000 m × 1,000 m = 1,000,000 m² exactly.
Each square kilometer is defined as 1000000 m² and each square meter as 1 m², so one km2 equals 1000000 ÷ 1 m2 = 1000000 m2.
Let a(km2) be the numeric value of the same area measured in Square Kilometer (km2), and a(m2) the value in Square Meter (m2). Then:
a(m2) = a(km2) × (1000000 / 1)
Equivalently, divide by how many km2 fit into one m2 (m² per m2 divided by m² per km2):
a(m2) = a(km2) ÷ 0.000001
Or: square meter = square kilometer ÷ 0.000001
Examples
Example #1: Convert 20 km2 to square meter
20 km2 = 20 km2 × (1000000/1) m2 = 20000000 m2
20 km2 = 20 km2 ÷ 0.000001 = 20000000 m2
Example #2: Convert 50 km2 to square meter
50 km2 = 50 km2 × (1000000/1) m2 = 50000000 m2
50 km2 = 50 km2 ÷ 0.000001 = 50000000 m2
Summary
To convert Square Kilometer to Square Meter, multiply the value in km2 by the ratio of square meters per km2 divided by square meters per m2. Equivalently: value_m2 = value_km2 × (1000000 / 1). Numerically, 1 km2 equals 1000000 m2.
Relationship context
Both units are metric (SI) and tied to the square meter. Conversions use exact ratios from their m² definitions. The factor from Square Kilometer to Square Meter is 1.000000e+6 (1 km2 = 1000000 m2).
Conversion tables
| Square Kilometer (km2) | Square Meter (m2) |
|---|---|
| 0.1 | 100,000 |
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 3 | 3,000,000 |
| 4 | 4,000,000 |
| 5 | 5,000,000 |
| 6 | 6,000,000 |
| 7 | 7,000,000 |
| 8 | 8,000,000 |
| 9 | 9,000,000 |
| Square Kilometer (km2) | Square Meter (m2) |
|---|---|
| 10 | 10,000,000 |
| 20 | 20,000,000 |
| 30 | 30,000,000 |
| 40 | 40,000,000 |
| 50 | 50,000,000 |
| 60 | 60,000,000 |
| 70 | 70,000,000 |
| 80 | 80,000,000 |
| 90 | 90,000,000 |
| 100 | 100,000,000 |