Square Meters to Square Kilometers

What is the m² to km² Converter?

This tool converts square meters to square kilometers, useful when individual property measurements need to be expressed at regional or district scale.

When to Use This Conversion

Working with large areas often requires shifting between scales:

• Development projects — aggregating multiple plots into total project area
• Urban planning — expressing neighborhood or district sizes
• Environmental reports — impact areas in standard geographic units
• Investment presentations — positioning project scale for stakeholders

The Conversion

1,000,000 square meters = 1 square kilometer

Or equivalently, 1 km² = 100 hectares = 247 acres. A 500,000 m² development equals 0.5 km² — a substantial urban project.

Scale Perspective

Central Park in New York City is about 3.41 km² (3,410,000 m²). Major development projects often range from 0.1 to 5 km².

How to Use

1. Total your square meters — add up all individual plots
2. Enter the value — type in the left field
3. Get square kilometers — for regional planning context

Development Scale Reference

Common project sizes in square kilometers:

• 100,000 m² = 0.1 km² — small industrial park
• 500,000 m² = 0.5 km² — large shopping complex
• 1,000,000 m² = 1 km² — major mixed-use development
• 5,000,000 m² = 5 km² — new town development
• 10,000,000 m² = 10 km² — city district scale

Regional Comparisons

Using km² allows easy comparison with known areas. If your development is 2 km², you can say it's "about half the size of Central Park" — immediately understandable.

Reverse Conversion

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

Converter Features

Instant Real-Time Conversion

See square kilometer equivalents as you type. Express large development projects in regional terms instantly.

Bidirectional Conversion

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

One-Click Copy

Copy regional-scale figures for presentations, planning documents, or investor communications.

Development Scale Reference

Project sizes in regional terms:

• 100,000 m² (0.1 km²) - Large shopping center
• 500,000 m² (0.5 km²) - Mixed-use development
• 1,000,000 m² (1 km²) - New town center
• 5,000,000 m² (5 km²) - Master-planned community

Mobile-Optimized Design

Convert development scales on your phone during site visits or stakeholder meetings.

Frequently Asked Questions

How do I convert square meters to square kilometers?

Divide by 1,000,000. For example, 2,500,000 m² ÷ 1,000,000 = 2.5 km².

When should I use km² instead of m²?

Use km² for areas larger than about 100,000 m². This makes numbers more manageable—"0.5 km²" is easier to grasp than "500,000 m²".

How does km² relate to hectares?

1 km² = 100 hectares = 1,000,000 m². Hectares are often used for mid-sized areas (farms, parks), while km² suits larger regions.

What's a helpful size comparison for 1 km²?

1 km² is about 100 city blocks, 247 acres, or roughly the size of Monaco. Central Park is 3.4 km².

Is this useful for urban planning?

Yes, zoning districts and development zones are often specified in km². Converting from plot-level m² data helps see the bigger picture.

How accurate is this conversion?

The conversion is mathematically exact: 1 km² = 1,000,000 m² by definition. No rounding errors occur.