One Liter of water weighs 1 Kilogram. So mg/L is the same as mg/kg.

Converting milligrams per liter (mg/l) to milligrams per kilogram (mg/kg) involves a simple conversion using the density of water. The density of water is approximately 1 gram per milliliter (g/ml) or 1,000 kilograms per cubic meter (kg/m³).

To convert mg/l to mg/kg, you need to multiply the value in mg/l by 1,000. Here's the conversion formula:

mg/kg = mg/l * 1,000

For example, if you have a concentration of 5 mg/l, the conversion to mg/kg would be:

5 mg/l * 1,000 = 5,000 mg/kg

So, 5 milligrams per liter is equivalent to 5,000 milligrams per kilogram.

Converting from milligrams per liter (mg/l) to milligrams per kilogram (mg/kg) involves multiplying the mg/l value by 1,000. This is because there are 1,000 liters in 1 cubic meter (m³), and 1 m³ of water weighs 1,000 kilograms (kg).

The formula for the conversion is:

mg/kg = mg/l × 1,000

For example, if you have a concentration of 50 mg/l, the conversion to mg/kg would be:

mg/kg = 50 mg/l × 1,000 = 50,000 mg/kg

So, 50 mg/l is equivalent to 50,000 mg/kg.

mg/lit and mg/kg both are different.For example Mg/lit used for water analysis whereas mg/kg used for soil analysis.