Provided and Providing

The words provided and providing are interchangeable when used to mean on condition that.

Examples:
  • Provided that the weather is fine, we'll have a picnic on Saturday.
  • Providing that the weather is fine, we'll have a picnic on Saturday.
  • Tony will attend provided that Sarah is not chairing the meeting.
  • The newspaper did not publish the photographs because they were given by a confidential source who did so provided that we not release them before the elections.

No Need for That

The word that can be omitted.

Examples:
  • Provided the weather is fine, we'll have a picnic on Saturday.
  • Providing the weather is fine, we'll have a picnic on Saturday.
PROVIDED IS MORE FORMAL


Some writers maintain that provided is preferable to providing as a conjunction meaning on condition that.

Both are acceptable. However, as some of your readers may prefer provided, it is safer to choose this option.