From indicates the starting point of an action and is usually followed by another proposition (until, to, till...) that marks the end of the action.
I lived in Italy from 2001 to 2015;
She played tennis from 1987 until she broke her arm;
Since is used to talk about a specific point in time, it refers to an action started in the past that continues in the present, in fact is usually used with unfinished actions.
I lived in Italy since I was 1;
I have been working since yesterday;
So what are the main differences between since and from ?
- From can be used with any tense, since only with the perfect tenses;
- From is followed by other propositions; since (usually) isn’t;
- From is usually used to indicate a finished action; since refers to an unfinished action
- From can refer to actions in the future, since refers to an action that continues up to now.