About

In real estate, agriculture, and land surveying, area units vary wildly by region and history. While the Square Meter (m²) is the standard SI unit for area, property listings often use Acres, Square Feet, or Hectares. Mixing these units can lead to costly errors in land valuation and construction planning.

This tool normalizes all area inputs into Square Meters. It features a comprehensive database of conversion factors, ranging from standard imperial units to archaic agricultural measures like the Rood or the Are. The calculations use high-precision factors to ensure accuracy for large-scale land surveys.

Formulas

The conversion to Square Meters is a linear multiplication operation using specific coefficients defined by international metrology agreements (such as the International Yard and Pound Agreement of 1959).

A_m² = A_unit × k

Where k is the conversion factor. For example, for Acres:

A_m² = A_acre × 4046.8564224

Reference Data

Unit	Factor to m²	Typical Use
Square Foot (sq ft)	0.092903	US/UK Housing
Square Yard (sq yd)	0.836127	Carpeting, Lawns
Are (a)	100	European Land
Acre (ac)	4,046.856	US/UK Agriculture
Hectare (ha)	10,000	Global Agriculture
Square Mile (sq mi)	2,589,988	Geography
Township (US)	93,239,572	US Public Land Survey

Frequently Asked Questions

There are approximately 4,046.86 square meters in one international acre. This is a common conversion for converting US/UK farmland specifications to the metric system.

An "Are" is 100 m² (10m x 10m). A "Hectare" is 100 Ares, or 10,000 m² (100m x 100m). The Hectare is the standard metric unit for land measurement, while the Are is rarely used outside of specific European contexts.

When converting very large units (like Square Miles) or very small units (like Square Inches) to meters, the numbers can become unwieldy. We use standard decimal formatting with commas, but extreme values may be best read in scientific notation.

Yes. The US Survey Foot is slightly larger (1200/3937 meters) than the International Foot (0.3048 meters). For small areas, the difference is negligible, but for vast geodetic surveys, the distinction matters. This tool uses the International Foot standard.