m² to km² Converter

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Convert square meters to square kilometers using the squared SI relation: 1 km = 1,000 m, so 1 km² = 1,000,000 m² (not 1,000). Anchors: 100,000 m² = 0.1 km² = 10 hectares, 500,000 m² = 0.5 km² = 50 hectares, 1,000,000 m² = 1 km². Useful for converting plot or park areas measured in square meters into the km²-scale of regional maps. Browser-local.

Square meter (m²)
Square kilometer (km²)

Square meter (m²) → Square kilometer (km²)

Quick reference table

Square meter (m²)Square kilometer (km²)
1 m²0 km²
2 m²0 km²
5 m²0 km²
10 m²0 km²
25 m²0 km²
50 m²0.0001 km²
100 m²0.0001 km²

Glossary

Square meter (m²)

The square meter is the SI derived unit of area, equal to the area of a square one meter on each side. It is the standard unit for room sizes, real-estate floor area in metric countries, fabric and material widths × heights, and most engineering surface areas. 1 m² = 10,000 cm² = 10.7639 ft².

Square kilometer (km²)

A square kilometer equals 1,000,000 m² or 100 hectares. It is the standard unit for city, region and country areas on metric maps. 1 km² ≈ 0.3861 mi² ≈ 247.1 acres. Note: 1 km² = 1,000,000 m² (not 1,000), because area scales as the square of length. The city of Paris covers about 105 km².

Metric / SI area

In the metric system, area is reported in square meters (SI base) and its scaled units — square millimeter, square centimeter, square kilometer — plus the convenient hectare (10,000 m²) for land. Each step is exactly 100× the previous because area scales as the square of length: 1 m² = 100 dm² = 10,000 cm² = 1,000,000 mm². This squared scaling is the most common manual-conversion error.

Imperial / US Customary area

US customary and UK imperial systems use square inch, square foot, square yard, acre and square mile (144 in² = 1 ft², 9 ft² = 1 yd², 4,840 yd² = 1 acre, 640 acres = 1 mi²). The acre — historically the area a team of oxen could plow in a day — survives as the standard land-parcel unit in the US. Linked to metric by 1 ft² = 0.09290304 m² exactly.

Related tools

Square Kilometers to Square Meters
Convert km² to m² — 1 km² = 1,000,000 m²
Square Meters to Hectares
Convert m² to hectares — 10,000 m² = 1 ha
Square Kilometers to Square Miles
Convert km² to mi² — 1 km² ≈ 0.3861 mi²
Area Converter
Convert area — mm², cm², m², ha, km², in², ft², yd², acres, mi²