Acres to Hectares & Fencing Calculator
Convert acres to hectares and square metres, and calculate perimeter fencing quantities for UK land parcels.
- 1 Acre
- 0.4047 ha
- Metric
- 1 Hectare
- 2.471 acres
- Imperial
- Post Spacing
- 3 m
- Stock fence
Formula & Statutory Rule
Formula
hectares = acres × 0.4047; area = width × length
Statutory Rule
1 acre = 4,046.86 sqm; 1 hectare = 10,000 sqm; post_spacing = 3 mRegional Benchmark Reference
| Jurisdiction / Tier | Rate or Limit | Statutory Note |
|---|---|---|
| 1 acre | 0.4047 ha | Metric |
| 1 hectare | 2.471 acres | Imperial |
| Post spacing | 3 m | Stock fence |
Frequently Asked Questions
How many hectares in an acre?
One acre equals 0.4047 hectares, and one hectare equals 2.471 acres.
How many square metres in an acre?
One acre is 4,046.86 square metres.
What post spacing for stock fencing?
Stock fencing typically uses 3 metre post spacing, with closer spacing on corners.
How do I measure an irregular field?
Break the field into rectangles and triangles, calculate each area, then sum them.