Acres to Hectares — ac to ha

Enter a value to convert acres (ac) to hectares (ha). Works in your browser with no sign-up.

[ ac / ha — Area ] instant · works offline
Acres · ac
0.4046856
Hectares · ha
1 ac = 0.4046856 ha
Acres → Hectares
⇄ Reverse: Hectares → Acres
Formula

1 ac = 0.4046856 ha

Multiply the number of acres by 0.4046856 (or divide by 2.471054). For example, 10 ac × 0.4046856 = 4.046856 ha.

Quick Reference — Acres to Hectares
About Area Units

Square metres, hectares and square kilometres are the metric standards. Square feet are common for property in North America and acres for land in the US and UK. One hectare is 10,000 m² (about 2.47 acres) and one acre is exactly 43,560 square feet.

Related Conversions
ha → ac All area units
All Area Conversions
→Hectares to acres →Square feet to square metres →Square kilometres to square miles →Square metres to square feet →Square miles to square kilometres
FAQ — Acres to Hectares

How do I convert acres to hectares?

Multiply the number of acres by 0.4046856 (or divide by 2.471054). For example, 10 ac × 0.4046856 = 4.046856 ha.

How many hectares are in one acre?

1 acre = 0.4046856 ha (shown to up to 7 significant figures).

How big is a hectare?

A hectare is 10,000 square metres, a square 100 m on each side, which is about 2.47 acres.

Does this converter work offline?

Yes. Once the page has loaded, conversions run entirely in your browser and nothing is sent to a server.