How long are Mormon blessings?

Answer 1

This depends on the person giving the blessing and on the type of blessing.More formal blessings are baby blessings, confirmations, ordinations, setting apart, and patriarchal blessings.
Baby Blessings are a celebration of a new baby or adopted child and is similar to a naming ceremony found in many other traditions. In this blessing, the baby is held in a circle of priesthood holders (usually family and close friends of the parents) who officially pronounce a name upon the baby, then bless them as the spirit directs. Usually the blessing involves thanking God and asking for good health and spiritual guidance for the child and lasts perhaps 1-5 minutes. Baby blessings are usually done as a part of the regular Sunday worship service so if you are invited to one, expect to stay for the full hour of worship.

Confirmations are performed on children and new converts shortly after baptism. The child or convert sits on a chair while a circle of priesthood holders (again usually family and close friends) lays hands upon them, bestows upon them the gift of the Holy Ghost, and then gives a blessing as the Spirit directs. This takes 1-5 minutes. Usually the blessing takes place at the baptism service or during the Sunday worship service immediately following, so if you are invited expect to stay for approximately an hour.

Ordinations are performed on teen boys and men when they join the priesthood or advance in priesthood leadership roles. It is performed in a similar way to a confirmation. Only the closest family and friends are invited to witness an ordination, which is usually held privately in the church after regular worship hours. The blessing itself takes 1-5 minutes. If you are invited expect to stay approximately 15 minutes.

Setting Apart is performed when a church member (of any age or gender) receives a new calling or position in the church. The blessing is usually performed by a single member of the Bishopric, Branch Presidency, or Stake Presidency, rather than a group of priesthood holders. The blessing usually asks for direction and support for the person in their new position and lasts 1-5 minutes. These are usually done privately after regular worship hours, with perhaps the person's spouse, parents, or children invited to attend.

Patriarchal Blessings are performed only by ordained patriarchs and usually only once in a person's life, often as a young adult or new convert. The Patriarchal Blessing is considered a personal message to the recipient from God and is given privately, usually in the Patriarch's home, with only the parents or spouse invited to attend. The longest of all blessings in the church, this may last 5-10 minutes or more.

More casual blessings (not less important but more likely to be unscheduled, impromptu) in the church are blessings of the sick, "father's" blessings, or Apostolic blessings.

Blessings of the Sick are given to those who are sick or injured. Usually requiring two priesthood holders, the person is anointed with oil and then blessed with health, strength, etc. This blessing is often offered to Mormons during a hospital stay, before surgery, in an emergency, or during a lengthy illness. The blessing is given as the Spirit directs and usually takes about 5 minutes.

Father's Blessings may be given by any priesthood holder chosen by the receiver, not just the father or spouse, although the father or spouse is usually the first choice if he is a priesthood holder. They are given during times of stress, before making a big decision, or before embarking on a new venture such as school or a new job. They are usually given privately at home and last 1-5 minutes.

Apostolic Blessings are given by ordained apostles, usually to large groups during a sermon. These can sometimes be difficult to distinguish from their regular sermon, but are usually begun by saying something like "As an Apostle, I bless you..." and are often at the end of the sermon. They can be long or short, anywhere from 1-10 minutes.

Answer 2

depends on what they need to say