For a standard-sized bathtub, the recommended amount of Epsom salt to add to your bath is generally between 1 to 2 cups (approximately 300 to 475 grams). Most sources suggest using about 2 cups of Epsom salt in a full tub of warm water for soaking at least 15 minutes to gain benefits such as muscle relaxation, pain relief, or skin soothing
. More specifically:
- The Mayo Clinic and Healthline recommend 2 cups of Epsom salt per gallon of warm water, which typically corresponds to a full bathtub
- For general use, 1 to 2 cups in a full tub is common, with 2 cups often used for muscle aches, joint pain, or detox baths
- If you have a larger garden tub, you can increase the amount to 2 to 4 cups
- For foot soaks, a smaller amount such as half to three-quarters of a cup is sufficient
Soaking time is usually at least 15 minutes, but can be longer depending on the purpose (e.g., 12-20 minutes for detox or pain relief)
. In summary, for a typical bath, add 1 to 2 cups of Epsom salt to warm water and soak for at least 15 minutes for effective results.
