631 kg to lbs (Kilograms to Pounds) ConversionBy Rachel Taylor / February 15, 2025 Converting 631 (kg) Kilograms to Pounds (kg to lbs) with our conversion calculator. 631 Kilograms to Pounds equals 1391.12 lbs. FromKilograms = Pounds We are converting 631 kg to lbs with our conversion calculator. 631 kg to lbs equals 1391.12 lbs. Related >> 573 kg to lbs (Kilograms to Pounds) Conversion