Restaurant Capacity Calculator
How full is your room, and what do the empty seats cost?
How full your room really is, and what the empty seats cost you each day.
This restaurant capacity calculator shows the most customers your room can serve in a day, and how close you get. The maximum is seats times turns times the average check. No venue reaches it. The common mistake is to treat that maximum as a target. It is a ceiling to measure against, and the gap tells you what a quiet day costs in dollars.
Maximum customers = seats × (hours open ÷ time per guest). How full = your daily sales ÷ (maximum customers × average check).
Per day
From sitting down to leaving
A typical day, not your best day
How full you are
43%
Empty seats cost you
$4,248 / day
That is $127,440 a month, over 30 days.
Turns per seat
6.7
Maximum daily sales
$7,448
Your daily sales
$3,200
The maximum assumes every seat is full on every turn, all day. No venue reaches it. For a busy restaurant, 60 to 70% is strong. Use the maximum as a ceiling to measure against, not a target. The gap is usually in the quiet hours.
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How this screen worksHow this works
- We divide your open hours by the time one guest stays. That is how many times each seat turns in a day.
- We multiply seats by turns to get the most customers you could serve. We multiply that by the average check to get the most sales you could take.
- We divide your actual daily sales by that maximum to get how full you are. We cap it at 100%. Above that, one of your inputs is wrong.
- The maximum is a ceiling, not a target. Real rooms rarely seat every chair: a table for four often seats two, and a 60 to 70% figure is a strong day for a restaurant.
- Empty seats cost the gap between the maximum and your actual sales, at your current average check. Raising the check moves this number as much as filling seats does.
Common questions
- How do I calculate restaurant capacity?
- Divide your open hours by the time one guest stays to get turns per seat. Multiply by your seats for the most customers a day. Multiply by the average check for the most sales a day.
- What is a good capacity utilization for a restaurant?
- For a full-service restaurant, a steady 60 to 70% is strong. Quick service runs higher, fine dining lower. Compare against your own last month, not against a venue with a different room and a different menu.
- What is a normal table turnaround time?
- About 45 minutes for quick service, 60 to 90 for casual dining, 120 or more for fine dining. Use the time you see in your own room, not the booking slot length. They are not the same number.
- The calculator says I am 100% full. Is that right?
- Almost certainly not. It means your daily sales are higher than the maximum, so one input is off. Check the average check and the time per guest first.
- Does this capacity calculator work for a salon or clinic?
- Yes. Enter chairs or beds as seats, and the time one appointment takes as the time per guest. The math is the same.
Paid plan · $39 a month
Fill those empty seats in one tap.
You know how many customers you are missing. Stop waiting for the door to open. Use KANJIN Premium to send a Slow Day SOS to your regulars and fill the room today.
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