Café seating capacity calculator
Enter the floor for tables and the length of any stool counter for a seat range, a table mix and the accessible seats.
Café seating estimator
Measure the floor for tables only: leave out the service counter, the queue and the back of house. Add a stool counter or window bar by its length.
Estimated seats · café
29 to 41 seats25 to 35 at tables, 4 to 6 at the counter
- Table area
- 40.0 m² (431 ft²)
- At 17 ft² a guest
- 431 ÷ 17 = 25.3 → 25 seats
- At 12 ft² a guest
- 431 ÷ 12 = 35.9 → 35 seats
- Counter stools
- 118 in ÷ 26 to 18 in a stool → 4 to 6 stools
- Tables, two-tops and four-tops equally
- 4 four-tops and 4 two-tops to 5 four-tops and 7 two-tops
- Accessible seats
- At least 2 to 3 (5% of the seats, rounded up), at surfaces 710 to 865 mm (28 to 34 in) high
- Code occupant load, tables
- 431 ÷ 15 = 28.7 people
Bars and counters are dining surfaces too: a stool counter higher than 34 in (865 mm) seats no one in the accessible count, so place the accessible seats at tables or at a lowered part of the counter, spread through the room.
The most table seats (35) exceed the code's occupant load for this area (28.7): exits, aisles and fixtures are then designed for the larger number, up to one person per 7 ft², and the building official may ask for an approved seating diagram.
Planning guidance, not a code or compliance check. Sources: area per guest and inches per stool, Thibodeaux, Restaurant Design, 7.5 [1]; occupant load, IBC Table 1004.5 [2]; accessible seats, 2010 ADA Standards §226.1, §902.3 [3].
From the café floor plans guide, with an editable template, pictures and more figures.
METHOD
How the calculation works
Table seats come from floor area per guest, counter seats from counter length per stool, both from a restaurant design textbook's figures for coffee shops and counter service [1]. Seats are whole and never rounded up.
- Table area
- length × width, in m² and ft²
- Table seats
- area in ft² ÷ 17 to area ÷ 12, each rounded down
- Counter stools
- counter length in inches ÷ 26 to length ÷ 18, each rounded down
- Table mix
- as many four-tops as two-tops (seats ÷ 6 of each, rounded down), the seats left over as further two-tops
- Accessible seats
- 5% of all seats, rounded up, at surfaces 28 to 34 in high
- Code occupant load
- table area in ft² ÷ 15 net ft² a person
Worked example
The calculator's starting values, an example room: a 8 × 5 m table area and a 3 m window bar.
- Table area
- 8 × 5 m = 40.0 m² (431 ft²)
- Table seats
- 431 ÷ 17 = 25.3 → 25; 431 ÷ 12 = 35.9 → 35
- Counter stools
- 118 in ÷ 26 → 4; ÷ 18 → 6
- Table mix
- 4 four-tops and 4 two-tops to 5 four-tops and 7 two-tops
- Accessible seats
- 5% of 29 and of 41, rounded up: at least 2 to 3
- Code occupant load
- 431 ÷ 15 = 28.7 people
- Result
- 29 to 41 seats
Here the most table seats (35) exceed the code's occupant load (28.7); the calculator then says what the code asks for the larger number, up to one person per 7 ft².
FIGURES
The figures it uses
| Figure | Value | How the calculator uses it | Source |
|---|---|---|---|
| Coffee shops and casual dining | 12–17 ft² a guest | The two ends of the table seat range | Thibodeaux 7.5 [1] |
| Counter service | 18–26 in a stool | The two ends of the stool range | Thibodeaux 7.5 [1] |
| Two-tops and four-tops | An equal balance | The table mix, from guests arriving mostly in pairs | Thibodeaux 7.5 [1] |
| Occupant load, tables and chairs | 15 net ft² a person | The number the code sizes exits for | IBC 2021 Table 1004.5 [2] |
| Accessible seating | 5% of seats | Seating and standing spaces at dining surfaces, counters included; rounded up | 2010 ADA Standards §226.1 [3] |
| Accessible surface height | 710–865 mm (28–34 in) | Where the accessible seats are | 2010 ADA Standards §902.3 [3] |
A textbook's planning ranges and US standard and model-code figures, as published. Your jurisdiction may number, amend or add to them.
A seat range from floor area is a first estimate, not a seating plan or an occupancy permit. Confirm seats, exits and accessibility with your building authority and a qualified professional.
QUESTIONS
Questions about this calculator
Which part of the floor should I measure?
The floor where tables stand, measured inside the walls: leave out the service counter and the floor in front of it where the line forms, the back of house, washrooms and the entry. The textbook's figures are per guest of seating area, so the area to divide is the seating area. [1]
Why equal numbers of two-tops and four-tops?
The textbook reports that 40 to 50% of guests arrive in pairs, 30% alone or in threes and 20% in groups of four or more, and concludes that most dining rooms should balance two-tops and four-tops equally. [1]
Do bar stools count toward the accessible seats?
A bar or counter is a dining surface, so its seats count toward the total, but an accessible seat is at a surface 710 to 865 mm (28 to 34 in) high. Seats at a taller counter need accessible places elsewhere, such as at tables or at a lowered part of the counter, spread through the room. [3]
How does the code count a café's occupants?
Areas with tables and chairs count one person per 15 ft² net, and booths one person per 24 in of seat. A larger occupant load is allowed when exits, aisles and fixtures are designed for it, up to one person per 7 ft². [2]
References
Sources of the figures this calculator uses.
- Restaurant Design: Concept to Customer, 7.5 Spatial Aspects of RestaurantWilliam R. Thibodeaux, Chef John Folse Culinary Institute, Nicholls State University; Workforce LibreTexts (CC BY-NC-SA 4.0). Space recommendations by restaurant segment: coffee shops and casual dining 12 to 17 ft² per guest, cafeterias 10 to 12, luxury or table service 15 to 20, counter service 18 to 26 in per stool; Seating and Tables: guest arrivals (40 to 50% in pairs, 30% alone or in threes, 20% in groups of four or more) and an equal balance of two-tops and four-tops.
- 2021 Illinois Building Code (the 2021 International Building Code as adopted): Section 1004.5, Areas without fixed seating, and Section 1004.6, Fixed seatingUpCodes. Table 1004.5 (assembly without fixed seats: unconcentrated, tables and chairs, 15 ft² net; standing space, 5 ft² net); Section 1004.5.1, Increased occupant load (at most one occupant per 7 ft²); Section 1004.6 (booths, one person per 24 in of seat length).Model-code text as adopted by one state (Section 1004.6 read at up.codes/s/fixed-seating); the International Code Council's own text was not checked. Your jurisdiction's adopted edition decides.
- 2010 ADA Standards for Accessible DesignU.S. Access Board. §226.1, dining surfaces (at least 5 percent of seating and standing spaces), §226.2 dispersion; §227.3 and its advisory, counters (order and pick-up both); §227.5, queues and waiting lines; §308.2.1, forward reach 15 to 48 in, and §904.5.1, self-service shelves and dispensers of food service lines; §403.5.1, walking surfaces 36 in (915 mm); §403.5.2, 180-degree turns; Advisory 902.1, bars and lunch counters are dining surfaces; §902.3, 28 to 34 in high; §904.4.1 and §904.4.2, sales and service counters.
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