Restaurant walk-in wait estimate calculator

Calculate estimated seating [party,table,wait minutes] and unseatable parties with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use estimated seating [party,table,wait minutes] and unseatable parties to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Tables [seats,minutes until available]; enter JSON
[[2,10],[4,20]]
Queued party sizes
2,4,2
Expected dining plus reset (minutes)
60
Estimated seating [party,table,wait minutes] (JSON)
[[1,1,10],[2,2,20],[3,1,70]]
Unseatable parties (count)
0

Try another scenario

Tables [seats,minutes until available]; enter JSON
[[2,5],[4,15]]
Queued party sizes
4,2,4
Expected dining plus reset (minutes)
45
Estimated seating [party,table,wait minutes] (JSON)
[[1,2,15],[2,1,5],[3,2,60]]
Unseatable parties (count)
0
Calculation method

Calculation method

Estimated seating [party,table,wait minutes] (JSON)

For each party choose compatible table with earliest modeled availability, tie smaller table then index; reserve for dining+reset.

Unseatable parties (count)

Party has no individual table with enough seats; no table combination inferred.

Symbols and units
a
Tables [seats,minutes until available]; enter JSON
b
Queued party sizes
c
Expected dining plus reset (minutes)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Fixed queue order and expected table departures; deterministic estimates with no probabilistic confidence interval. Supported limits: All numeric inputs and computed intermediates must remain finite. Supported numeric input magnitude is zero or 1e-12 through 1e12 in absolute value; reject values outside this bounded range. All lists/JSON record tables are limited to 100 records unless a stricter bound is stated; reject malformed record arity and wrong member types. All numeric values must be finite. Lists contain at most 100 records; required lists must be nonempty. Rates, probabilities and fractions are entered as fractions, not percentages; fractions must be between 0 and 1. Use a single consistent user-selected currency for all amounts; no exchange-rate conversion.
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