well no-one knows that for sure only God does. but from my point of view i could say that it weighs more less than you way now.
In the Death Note: How to Read, it says that he weighs 119 lbs
In the manga, Soul does become a Death Scythe, but in the anime he does not.
Some believe the soul weighs 21 grams, due to experiments in weighing a person just before and immediately after death, when the body becomes lighter by 21 grams.
Soul
osiris
Life is a Soul in the eyes of Death.
Yes, EVERYTHING living has a soul, conscience, and atoms!
In 1907, Doctor Duncan MacDougall conducted an experiment in which he measured the weight of a person immediately before and after death. The change in weight at the moment of death was calculated to be three quarters of an ounce. MacDougall believed this to be the weight of the soul.
If the heart weighs as much as the feather..then you're IN the afterlife..but it doesn't, your soul gets devoured by a god and u cannot enter the afterlife
Life-in-Death
The angel of death does NOT KILL PEOPLE it takes the soul from the dying.
4242564 whenever you wanna knock on Death's door~