Event Seating Chart Calculator
Plan tables, chairs, linens and centrepieces for a seated event.
Last updated · View algorithm, constants and default inputs (JSON)
About this calculator
Planning estimate: tables are rounded up to the selected capacity, a positive head-table guest count adds one table, and napkins use a 1.2-per-guest allowance. Adjust for your venue, layout and service plan.
Worked example
calculated with the default values below
Number of guests 100 · Seats per table 10 · Head table guests 8 Guest tables 10 · Total tables including head table 11 · Chairs 108 · Linens 11 · Centrepieces 10 · Napkins 128 · Empty seats 8
General background references
Disclaimer
These calculators give general estimates. Sizing, pricing, availability and standards vary by brand, retailer and country, so treat the output as a starting point and confirm it against the seller's or authority's own figures.
Implementation source
This record describes the implementation used by this page. It is not independent validation. External references, when available, support only the stated formula or definition; estimates and custom rules retain their own assumptions.
Formula and variables
T = ceil(G ÷ s); C = T × s + h; N = ceil(1.2 × G) + h
- G
- guests
- s
- seats per guest table
- h
- head-table seats
- T
- guest tables
- C
- total chairs
- N
- napkins
Guest tables are rounded up to fit the selected seats per table. A positive head-table value adds one head table and its seats. Napkins use a model allowance of 1.2 per guest plus the head-table seat count; this is a planning assumption, not an event standard.
Frequently asked questions
What do the table and napkin counts assume?
Guest tables are rounded up to fit the selected seats per table. A positive head-table value adds one head table and its seats. Napkins use a model allowance of 1.2 per guest plus the head-table seat count; this is a planning assumption, not an event standard.