Quintals per Hectare to Pounds per Acre (q/ha to lb/acre)

Formula

lb/acre = q/ha × 89.21791216197

Derivation from SI units:

• 1 quintal = 100 kg, so 1 q/ha = 100 kg/ha.
• 1 lb/acre = 0.45359237 kg ÷ 0.40468564224 ha ≈ 1.12085 kg/ha.
• 1 q/ha = 100 kg/ha ÷ 1.120851156194 kg/ha per lb/acre = 89.21791216197 lb/acre

Both units are defined exactly, so the factor is exact. Quintal per Hectare definition: quintal per hectare; Pound per Acre definition: pound per acre.

Worked examples

1. A reading of 20 q/ha converts to 1784.358243 lb/acre.
   20 q/ha × 89.21791216 = 1784.358243 lb/acre
2. A value of 40 q/ha is 3568.716486 lb/acre.
   40 q/ha × 89.21791216 = 3568.716486 lb/acre

Where it's used

Quintals per Hectare are used for crop yield in Indian agriculture statistics, while pounds per acre appear in US fertiliser and seeding rates. Both measure mass applied or harvested per unit land area, so the conversion is a fixed factor.

Quintal per Hectare to other application rate units

Frequently asked questions

Sources

• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units) and Table 8 (non-SI units accepted for use with the SI).
• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound (avoirdupois)".

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.