Acre (ac) to Hectare (ha) Converter
1 ac = 0.404686 ha
To convert Acre (ac) to Hectare (ha), multiply the value by 0.404686 — one ac is exactly 0.404686 ha. Both are units of Area. The table below lists the most-searched conversions, and the converter handles any value.
Formula
ha = ac × 0.404686ac to ha conversion table
Frequently asked questions
How many ha are in 1 ac?+
1 Acre equals 0.404686 Hectare, so 1 ac = 0.404686 ha.
What is the formula to convert ac to ha?+
Multiply the number of Acre by 0.404686. In other words: ha = ac × 0.404686.
How much is 1 ac in ha?+
1 Acre = 0.404686 Hectare (1 ac = 0.404686 ha).
Is this conversion exact?+
Yes. The factor used is the unit’s official definition; results are rounded to 10 significant digits for readability.