Square Inch to Square Kilometer (km²) Conversion
Convert square inch to square kilometer (km²) with precision. Enter values and get instant conversions.
Area Converter
1 Square Inch = 0 Square Kilometer (km²)
Common Conversions
About Square Inch to Square Kilometer (km²) Conversion
Converting from Square Inch to Square Kilometer (km²) is a common area conversion.
This online converter allows you to easily convert between square inch and square kilometer (km²), providing instant results with high precision.
Square Inch
Definition: A square inch (symbol: in²) is an imperial and US customary unit of area equal to a square with 1 inch sides. One square inch equals exactly 6.4516 square centimeters or 0.00694 square feet.
History: Originated from the Roman 'uncia' (1/12 of a foot). The international inch definition of 1959 (exactly 25.4 mm) standardized the square inch in metric terms.
Current use: Used in engineering (stress calculations), manufacturing (material specifications), and electronics (chip sizes) in the US. Common for measuring small areas where imperial units are preferred.
Square Kilometer (km²)
Definition: A square kilometer (symbol: km²) is a multiple of the square meter, equal to the area of a square with 1 kilometer (1000 meters) on each side. One square kilometer equals 1,000,000 square meters or approximately 0.3861 square miles.
History: Developed as part of the metric system's decimal-based scaling, the square kilometer became particularly useful for geographical measurements. Its adoption grew with the metric system's international acceptance in the 19th and 20th centuries.
Current use: Primarily used to measure large land areas such as cities, national parks, and countries. Commonly appears in geographical surveys, urban planning, and environmental studies. Most world maps and atlases use square kilometers, though some US publications still use square miles.
Details
- From: Square Inch
- To: Square Kilometer (km²)
- Formula: 1 Square Inch = 0.0000000006 km²
- Example: 25 Square Inch = 0.0000000161 km²
Square Inch to Square Kilometer (km²) Conversion Table
| Square Inch | Square Kilometer (km²) |
|---|---|
| 0.01 | 0 |
| 0.1 | 1e-10 |
| 1 | 6e-10 |
| 2 | 1.3e-9 |
| 3 | 1.9e-9 |
| 5 | 3.2e-9 |
| 10 | 6.5e-9 |
| 20 | 1.29e-8 |
| 50 | 3.23e-8 |
| 100 | 6.45e-8 |
| 1000 | 6.452e-7 |