Enter the amount of sodium (mg) and the amount of water (L) into the Sodium to Water Ratio Calculator. The calculator will evaluate and display the Sodium to Water Ratio.

## Sodium to Water Ratio Formula

The following formula is used to calculate the Sodium to Water Ratio.

STW = S / W
• Where STW is the Sodium to Water Ratio (mg/L)
• S is the amount of sodium (mg)
• W is the amount of water (L)

To calculate a sodium to water ratio, divide the amount of sodium by the amount of water.

## How to Calculate Sodium to Water Ratio?

The following example problems outline how to calculate Sodium to Water Ratio.

Example Problem #1:

1. First, determine the amount of sodium (mg).
• The amount of sodium (mg) is given as: 500.
2. Next, determine the amount of water (L).
• The amount of water (L) is provided as: 3.
3. Finally, calculate the Sodium to Water Ratio using the equation above:

STW = S / W

The values given above are inserted into the equation below and the solution is calculated:

STW = 500 / 3 = 166.67 (mg/L)

Example Problem #2:

For this problem, the variables required are provided below:

amount of sodium (mg) = 600

amount of water (L) = 2