What is the km² to m² Converter?

This tool converts square kilometers to square meters, essential when translating regional or district-level data into site-specific measurements.

From Regional to Practical

Geographic and administrative data is often expressed in km², but actual development works in m²:

Land subdivision — how many buildable plots fit in a given area?
Housing calculations — density requirements specify homes per area
Infrastructure planning — roads, parks, and utilities need m² specifications
Investment analysis — price per m² requires this conversion

The Conversion

1 square kilometer = 1,000,000 square meters

A 2 km² development zone contains 2,000,000 m². At a density of 1,000 m² per home plot, that's 2,000 potential homes (before accounting for roads, parks, etc.).

Development Math

If a city allocates 10 km² for new housing, that's 10,000,000 m². With 30% going to infrastructure, 7,000,000 m² remain for homes — potentially 7,000 to 14,000 residences depending on lot sizes.

How to Use

Find your km² figure — from maps, statistics, or planning documents
Enter the value — type in the left field
Get square meters — for detailed site-level planning

Regional to Local Reference

Breaking down common regional areas:

0.1 km² = 100,000 m² (10 hectares) — neighborhood park
0.5 km² = 500,000 m² — large commercial development
1 km² = 1,000,000 m² — district or town center
5 km² = 5,000,000 m² — suburban expansion area
10 km² = 10,000,000 m² — new town development

Housing Density Calculation

To estimate housing capacity: convert km² to m², subtract 30-40% for infrastructure (roads, parks, utilities), then divide by average lot size (typically 500-1,000 m² for suburban, 100-300 m² for urban).

Reverse Conversion

Click the swap button (↔) to convert square meters to square kilometers.

Converter Features

Instant Real-Time Conversion

See square meter equivalents as you type. Break down regional data into plot-level terms instantly.

Bidirectional Conversion

Switch between km² and m² with one click. Work in whichever scale your analysis requires.

One-Click Copy

Copy site-level figures for development calculations, density analysis, or infrastructure planning.

Regional to Site Reference

Breaking down large areas:

0.1 km² (100,000 m²) - 100 plots of 1,000 m²
1 km² (1,000,000 m²) - 1,000 plots of 1,000 m²
5 km² (5,000,000 m²) - Major urban development
10 km² (10,000,000 m²) - New district scale

Mobile-Optimized Design

Calculate development capacity on your phone during site evaluations or planning meetings.

Frequently Asked Questions

How do I convert square kilometers to square meters?

Multiply by 1,000,000. For example, 2.5 km² × 1,000,000 = 2,500,000 m².

Why is the factor one million?

1 kilometer = 1,000 meters, so 1 km² = 1,000 × 1,000 = 1,000,000 m². It's the square of the linear conversion.

How do I calculate housing capacity from km²?

Convert to m², subtract 30-40% for infrastructure, divide by average lot size. For 1 km² with 35% infrastructure and 800 m² lots: 650,000 ÷ 800 = 812 potential homes.

What about mixed-use development?

Allocate percentages: residential (50%), commercial (20%), parks (15%), roads (15%). Convert each portion to m² for detailed planning.

How does this relate to population density?

Population density is often stated per km². If density is 5,000 people/km², and you have 2 km², expect housing for 10,000 people.

Is this conversion exact?

Yes, by definition: 1 km² = exactly 1,000,000 m². This is a metric system relationship with no rounding.

Square Kilometers to Square Meters