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Calcimator

Product Inventory Calculator

Calculate reorder points, safety stock, and optimal order quantities for salon product inventory.

Inputs

units
$
days
days
units
months

Results

Reorder Point

9 units

Needs Reorder Now0
Days Until Reorder15 days
Optimal Order Quantity66 units
Safety Stock4 units
Monthly Product Cost$259.80
Annual Product Cost$3,120.00
How to Use This Calculator
  1. Enter each product name, current quantity on hand, and unit cost.
  2. Set the weekly usage rate and lead time for reordering.
  3. Review the reorder point and recommended order quantity for each item.
  4. Use the total inventory value to manage cash tied up in product stock.
  5. Reorder flagged items before reaching zero to avoid service cancellations.

How the result changes with Weekly Usage

Weekly UsageReorder Point
2035 units
70120 units
130223 units
180309 units

What each input means

Weekly Usage
Average units consumed per week
Cost per Unit
Purchase price per unit
Lead Time
Days between ordering and receiving
Safety Stock Buffer
Extra days of stock to keep as buffer
Current Stock
Units currently on hand
Shelf Life
Product shelf life after purchase

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Weekly Usage = 5, Cost per Unit = 12, Lead Time = 7, Safety Stock Buffer = 5 = 6 input(s) provided
  2. Calculate Reorder Point
    Reorder Point
    9 = 9
  3. Calculate Needs Reorder Now
    0 = 0
  4. Calculate Days Until Reorder
    Days Until Reorder
    15 = 15

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.

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