How many kilograms are there in 25 litres of soil?

Well, darling, the weight of soil can vary depending on its composition, but on average, 1 liter of soil weighs about 1.5 kilograms. So, 25 liters of soil would roughly weigh around 37.5 kilograms. But hey, if you're dealing with some super dense soil, you might want to grab a shovel and a scale to get a more accurate answer.