Some labels do give you the salt content of food per serving, but this currently only applies to a small number of foods; other labels on foods give the amount of sodium in grams per 100g of food.
To convert sodium to salt, you need to multiply the amount of sodium by 2.5
1 gram of sodium per 100g = 2.5 grams salt
You then need to know the weight of the serving portion in grams, then multiply this to work out the amount of salt in the serving.
As a guide a child's salt consumption should not be more than 4 grams of salt a day.
This information is supplied by CASH (Consensus Action on Salt and Health) which is a group of specialists concerned with salt and its effects on health.
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