Trades consumable kit per job calculator

Calculate kit and refill plan [name,demand,kits,refill packs,surplus] with your own figures.

Your numbers

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

Use kit and refill plan [name,demand,kits,refill packs,surplus] to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Consumables [name,jobs,units per job,units per kit,stock units,refill pack units]; enter JSON
[["Screws",8,30,100,150,100],["Blades",8,2,10,5,10]]
Kit and refill plan [name,demand,kits,refill packs,surplus] (JSON)
[["Screws",240,3,1,10],["Blades",16,2,2,9]]

Try another scenario

Consumables [name,jobs,units per job,units per kit,stock units,refill pack units]; enter JSON
[["Screws",10,35,120,180,100],["Blades",10,3,10,10,10]]
Kit and refill plan [name,demand,kits,refill packs,surplus] (JSON)
[["Screws",350,3,2,30],["Blades",30,3,2,0]]
Calculation method

Calculation method

Kit and refill plan [name,demand,kits,refill packs,surplus] (JSON)

Demand=jobs×per-job; kits=ceil(demand/kit capacity); refill packs=ceil(max(0,demand−stock)/pack); surplus=stock+packs×pack−demand.

Symbols and units
a
Consumables [name,jobs,units per job,units per kit,stock units,refill pack units]; enter JSON

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

  • Consumables grouped by job type with whole kits and supplier refill packs; no compatibility inference. 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. Kit/pack capacities>0; other counts>=0; item units consistent; kits are containers, not additional consumption.
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