How Long Should a Sermon Be? What the Research and the Clock Actually Say

# How Long Should a Sermon Be?

Long enough to say the one thing, short enough that people are still with you when you say it.

That sounds like a dodge, so let us make it concrete. There is no universal correct number of minutes, and anyone who gives you one without asking about your tradition, your congregation, and your preaching is guessing. What there is: a set of ranges that different traditions actually run, a small number of things that reliably determine whether length hurts you, and a way to find your own answer.

A note on the research, since it is in the title of this piece. You will see confident claims online about average attention spans and precise minute thresholds, usually with no source or with a source that does not say what the article claims. We are not going to repeat those numbers, because we cannot stand behind them. What we can describe honestly is what churches actually do and what predictably goes wrong, which is more useful anyway.

Is a 40 minute sermon too long?

Not inherently. Forty minutes is entirely normal in expository, Reformed, Baptist, and many nondenominational settings. It is unusual in traditions built around a liturgy where the sermon is one element among several, and in those settings a forty-minute sermon would displace things the service is structured around.

A forty-minute sermon goes wrong for reasons that have nothing to do with the number:

• It is two sermons. You had a second good idea and could not cut it. The congregation feels the seam even if they cannot name it.
• It has no visible structure. People will follow you a long way if they know where they are. They will not follow you five minutes if they are lost.
• It restates the same point four times because you were not sure they got it. They got it the second time.
• The service around it is already long. Forty minutes after twenty-five minutes of music and fifteen minutes of announcements is a different experience than forty minutes after fifteen minutes of music.
• The room is uncomfortable. Hard pews, heat, no childcare. Physical discomfort is felt as length.

If your forty minutes is one idea, clearly structured, and moving forward the whole time, most congregations who came expecting a sermon will stay with you. If it is thirty minutes of content stretched over forty, they will not, and they would not have stayed for twenty-five of the same stretching either.

How long should a good sermon last?

Here is the range you will actually encounter across traditions:

• 10 to 15 minutes. Common in liturgical services, weekday and chapel services, and services with communion. The sermon serves the liturgy rather than carrying it.
• 20 to 25 minutes. Common in mainline Protestant Sunday worship and in many contemporary services with a heavy music set.
• 30 to 40 minutes. The broad center of expository preaching in evangelical churches. If you have no other constraint, this is the default most preachers land in.
• 45 to 60 minutes and beyond. Normal in some traditions, including many historically Black churches, some Reformed pulpits, and teaching-oriented congregations where the sermon is the service.

The correct answer for you is the one your congregation has been formed to expect, adjusted slowly if you want to change it. A congregation used to twenty-two minutes will experience thirty-five as a marathon. The same thirty-five minutes in a church used to forty-five feels brisk.

Two practical rules that hold up regardless of tradition:

Length is a budget, not a target. Decide what the sermon must accomplish, write it, then time it. If it runs long, cut content, not clarity. Cutting the illustration that makes the point land in order to keep a third head that nobody needed is the wrong trade.

Your ending has to be planned. Most sermons that feel too long were fine until the preacher circled the runway. Write the last two sentences and say those.

How long was the average sermon in history?

Longer, in many periods, and the honest caveat is that the historical record is patchy and skewed toward the sermons someone thought worth printing.

What we can say without inventing figures: Puritan-era preaching in England and colonial New England was famously long by modern standards, often running well over an hour, sometimes measured by an hourglass on the pulpit. Nineteenth-century pulpit giants published sermons that read as forty-five to sixty minutes of delivery. Patristic homilies vary widely, and many surviving ones are short, though what survives is a transcript tradition rather than a stopwatch record.

The methodological problem with all of this: we mostly have texts, not timings. A published sermon may have been delivered at a different length than it reads, expanded for print or condensed from notes. Anyone who quotes you a precise historical average is reconstructing it from that same uncertain material.

The useful takeaway is not a number. It is that congregations have sat happily through radically different lengths in different centuries, which means length is a cultural expectation rather than a fixed property of human attention.

Do shorter sermons hold attention better?

Not automatically, and this is where the popular advice most often misleads.

A twenty-minute sermon with no structure loses people at minute nine. A forty-minute sermon with a clear line, real illustrations, and a preacher who is present in the room holds them to the end. Attention tracks movement and clarity, not duration. If the listener can tell that you are going somewhere and that you are closer to it than you were five minutes ago, they stay.

What actually moves attention, in rough order of impact:

1. A single controlling idea the listener could repeat in the parking lot.
2. Visible structure, signposted out loud. "That is the first thing. Here is the second."
3. Concrete before abstract. A specific story, then the principle.
4. Varied pace. Sustained intensity is as numbing as sustained flatness.
5. Eye contact. Reading a manuscript with your head down costs more attention than ten extra minutes would.
6. An ending that lands instead of three false stops.

If you want to shorten a sermon, cut a point rather than compressing all three. Three rushed points feel longer than two unhurried ones.

How to find your own number

Do this over four weeks, and stop guessing:

1. Time your actual delivery, not your prep estimate. Preachers routinely run three to eight minutes longer than they planned.
2. Note the service length around it. The sermon is experienced inside the whole service.
3. Ask five people who are not staff what the sermon was about. If they can say it, length was not your problem.
4. Look at where you lost the room, if you have a recording. There is usually a specific minute.
5. Adjust one variable at a time.

Step 4 is much easier with a transcript in front of you, because you can see the structure on the page instead of trying to remember it. If you record your sermons, our transcription tool will give you the text to read back; if you do not record them, start there, because the recording is worth more than the transcript.

For the word-count side of this, which is what you actually need while writing rather than after preaching, see how many words a 30-minute sermon is. And if you want a quick estimate from a manuscript you have already written, the sermon length calculator will do the arithmetic for you.