According to fat loss expert Anjali Sachan, 1 kg of fat is equivalent to approximately 7,700 calories. "This number comes from actual stored body fat - not water weight...[or]...glycogen," she said. She emphasised that walking burns 50-70 calories per 1,000 steps. This means one would need to walk roughly 1,28,000-1,50,000 steps to burn 1 kg of fat through walking alone.