Hectare to Acre Converter

Step-by-Step Guide

1. 1Enter your hectare value: Type any number of hectares into the input field. Decimals are fully supported — 0.5, 2.47, or 1000 all work. The acre result appears instantly as you type.
2. 2Read the acre result: The acre equivalent displays immediately. For 1 hectare, the result is 2.47105 acres. For 0.5 hectare, it is 1.23553 acres. The result updates with every keystroke.
3. 3Adjust decimal precision: Use the precision selector to choose 2, 4, 6, or 8 decimal places. Four decimal places is suitable for most agricultural and real estate purposes; six or more for legal or scientific precision.
4. 4Use presets for common values: Click any preset button — 0.5, 1, 5, 10, 50, or 100 ha — to instantly load that value. Presets cover the most common land parcel sizes in farming, property, and development contexts.
5. 5Swap to acres-to-hectares: Click the swap button to reverse the conversion direction. Enter acres and receive hectares — the same tool covers both directions without navigating to a different page.
6. 6Copy or export your result: Click copy to send the result to clipboard, or download a text report of your conversion history for documentation, client handoff, or property records.

What This Tool Provides

• ✓Instant ha to acres conversion
• ✓Reverse conversion: acres to hectares
• ✓2, 4, 6, and 8 decimal precision
• ✓Presets: 0.5, 1, 5, 10, 50, 100 ha
• ✓Full reference table (common values both directions)
• ✓Land size context descriptions
• ✓Conversion history (last 10 entries)
• ✓Copy result to clipboard
• ✓Export conversion report
• ✓100% browser-based — no data sent to server
• ✓No registration required

Pro Tips

• 💡Use 2.5× as a mental shortcut for rough estimates — multiply hectares by 2.5 for an approximate acre count. It is 1.2% high (overestimates by about 1 acre per 83 hectares), which is acceptable for casual checks but not legal or financial documents.
• 💡When reporting land area for international agricultural grant applications, always use hectares — the FAO, EU, and most development agencies require metric units. Convert any acre-based source data to hectares before submission.
• 💡For land purchase decisions, always use 4+ decimal places. A 0.001 acre per hectare rounding error on a 500-hectare transaction equals 0.5 acres — potentially thousands of dollars of land area at commercial rates.
• 💡Remember that 1 km² = 100 hectares = 247.105 acres. If you need to convert between square kilometers and acres, go through hectares as an intermediate step: km² × 100 = hectares × 2.47105 = acres.
• 💡Cross-check large conversions against the approximate rule: if the answer isn't close to hectares × 2.5, something is wrong. 1,000 hectares should be close to 2,500 acres — the exact 2,471.05 confirms the conversion is correct.

Common Mistakes to Avoid

• ✕Don't use 2.5 as an exact conversion factor for official documents. The correct factor is 2.47105 — using 2.5 introduces a 1.2% error that accumulates significantly on large land areas. 100 hectares at 2.5× gives 250 acres; the correct answer is 247.105 acres.
• ✕Don't confuse hectares with square hectometers or other similar-sounding metric area units. 1 hectare = 100 ares = 10,000 square meters. There is no such unit as a 'square hectare.' If you see 'hm²' it means square hectometer, which equals 1 hectare.
• ✕Don't invert the formula accidentally. Hectares to acres: multiply by 2.47105. Acres to hectares: multiply by 0.404686 (or divide by 2.47105). Multiplying by 2.47105 when converting acres to hectares gives a result 6× too large.
• ✕Don't assume all international land documents use metric. UK land registry records use hectares for official area, but many English agricultural leases and estate agent listings still quote in acres. Always confirm the unit before applying a conversion.
• ✕Don't rely on browser language settings to determine whether a document uses acres or hectares. A US-based company operating land in Europe may report in hectares; a UK-based buyer may request acres. Always confirm the expected unit with the counterparty.

Hectares → Acres

Acres → Hectares