Square Centimeters to Square Chains: the quick answer
1 cm² = 2.47105 × 10⁻⁷ ch²
1 square centimeter equals 2.47105 × 10⁻⁷ square chains
To convert square centimeters to square chains, multiply the value by 2.47105 × 10⁻⁷. To go the other way, multiply square chains by 4,046,860 to get square centimeters.