| How to convert Hectares to Square Astronomical: 1 hectare is approximately equal to 4.47e-19 square astronomical. 1 ha ≈ (1 * 4.47e-19) ≈ 4.47e-19 square astronomical The areaQ(sa) in square angstroms is equal to the area Q(ha) in hectacres multiplied by 0.00000000000000000044683677582981. | 
| Formula: Q(sa) = Q(ha) * 0.00000000000000000044683677582981 | 
| Hectares to Square Astronomical conversion table 
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