What is the difference between ‘because (of)’, ‘due to’, ‘since’ and ‘as’?

  • Because (of) vs Due to

Each of these expressions, which end with a preposition, introduces a cause clause (a reason).  The preposition is followed by a noun or pronoun. The cause-clause may occur before or after the effect-clause.

Use “due to” if you can substitute “attributable to,” “caused by,” or “resulting from.”




Because of the gas explosion,

several homes   burned down.

Due to the free flow of gas,

water could not put out the fire.

Several homes   burned down,

because of the gas explosion,


Wordy alternatives to say ‘because’: “due to the fact that,” “owing to the fact that,” “on account of,” and “on the grounds that,” for example.  It’s better to be concise.

Other Times to Use “Due to”

Note: ‘Due to’ can mean “payable to” or “supposed to”. For example, you could say, “I ask that you pay what is due to me.” Here, you are asking for money that someone owes you. You could also say, “The plane is due to arrive at noon,” meaning the plane should arrive at 12.

“Since” or “Because”?

But “since” and “because” can be synonyms.  “Since you hate it, don’t eat it” means the same thing as “Because you hate it, don’t eat it.”

The word “since” often refers to how much time has passed, as in “Since yesterday, all I’ve thought about is you.” Sometimes, a sentence with “since” can be interpreted in two ways, and that is when you should avoid using “since” to mean “because.” Take this ambiguous sentence:

“Since we won the pitch, we’re working really hard.” “Since” could mean “from the time that” or “because.”

A similar problem arises with the word “as,” which can also mean “because,” so don’t write an ambiguous sentence.



English offers many ways to express “because.”  Some are wordy (verbose) and should be avoided.  Others ways to express “because”, like “since” and “as,” need to be used carefully, because they can be confusing.

The word because is followed by a sentence.

The expression because of is followed by a noun or a pronoun.

The combination due to is followed by a noun or a pronoun.

E.g  The team left early because they wanted to arrive at the client’s office on time.

E.g. The flight was delayed because of the bad weather.

E.g. They lost the game because of their lack of experience.

E.g. The decision about the pitch could be due to several factors.

E.g. He gets into arguments regularly due to his stubbornness.


Posted on 06/06/2013, in Uncategorized and tagged , , , , , , , , , , , , , , , . Bookmark the permalink. Leave a comment.

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