Area conversion factors/Numbers
From TO Multiply By
| acres | Hectare | 0.4047 |
| Sq hectometer | 0.4047 | |
| Sq chains (Gunter's) | 10 | |
| Sq cm | 4.04686 x 107 | |
| Sq feet | 43560 | |
| Sq feet (US Survey) | 43559.83 | |
| Sq inches | 6.27264 x106 | |
| Sq kilometers | 4.04686 x 10-3 | |
| Sq links (Gunter's) | 1 x 105 | |
| Sq meters | 4046.86 | |
| Sq miles (Statute) | 1.5625 x 10-3 | |
| Sq perches | 160 | |
| Sq rods | 160 | |
| Sq yards | 4840 | |
| ares | acres | 0.024711 |
| Sq dekameters | 1 | |
| Sq feet | 1076.39 | |
| Sq meters | 100 | |
| Sq miles | 3.86102 x 10-5 | |
| Sq yards | 119.60 | |
| arpent (French) | acres | 0.85* |
| barns | sq cm | 1 x 10-24 |
| Sq femtometers | 100 | |
| bolts of cloth | ells | 32 |
| linear feet | 120 | |
| meters | 36.576 |