A hectare (ha) is a unit of area of 10,000 square metres. That corresponds to a square of 100 by 100 metres, or to 100 ares. The hectare is not an SI unit, but it is widely used in construction, land surveying and agriculture for larger areas.
Converting
| Unit | Value |
|---|---|
| 1 hectare | 10,000 m² |
| 1 hectare | 100 ares |
| 1 are | 100 m² |
| 1 km² | 100 hectares |
| 1 hectare | 0.01 km² |
For comparison: a football pitch is roughly 0.7 to 0.75 hectare.
Application
- Plots and building land — the area of parcels is often expressed in hectares
- Zoning plans and area development — for larger areas
- Land prices — building and agricultural land are often traded per hectare
- Land surveying and land registry — when recording parcel boundaries
Points to watch
- Are and centiare — the land registry also uses ares (100 m²) and centiares (1 m²)
- Do not confuse area with dimensions — 1 hectare can have any shape; only the area is 10,000 m²
Related terms
- Measurements
- Are
- Plot
- Parcel
- Land registry
Want to learn more about construction terms? Visit our knowledge base at fredsdiyplans.com.