Free warehouse calculators.
Six free calculators for the numbers every warehouse plans around. Each shows its formula, explains every input and works through an example.
Free calculators
- Reorder point calculatorCalculate your reorder point from average daily demand, supplier lead time and safety stock. Free calculator with the formula and a worked example.
Reorder point = (average daily demand × lead time in days) + safety stock - Safety stock calculatorCalculate safety stock from demand and lead-time variability at your chosen service level. Free calculator with the statistical formula and an example.
Safety stock = Z × √(L × σd² + d² × σL²); with a fixed lead time, safety stock = Z × σd × √L - EOQ calculatorFind your economic order quantity, orders per year and total ordering plus holding cost. Free EOQ calculator with the formula and a worked example.
EOQ = √(2 × annual demand × cost per order ÷ holding cost per unit per year) - Inventory turnover calculatorCalculate inventory turnover and days inventory outstanding from cost of goods sold and inventory value. Free calculator with the formula and an example.
Inventory turnover = cost of goods sold ÷ ((beginning inventory + ending inventory) ÷ 2); days inventory outstanding = days in period ÷ turnover - Pallet storage calculatorEstimate pallets, pallet positions and rack bays for your peak stock at a workable utilization. Free pallet storage calculator with a worked example.
Pallets = ceil(peak units on hand ÷ units per pallet); pallet positions = ceil(pallets ÷ target utilization); rack bays = ceil(positions ÷ positions per bay) - Picker staffing calculatorEstimate pickers needed per shift from orders per day, lines per order and pick rate. Free warehouse labor calculator with the formula and an example.
Lines per day = orders per day × lines per order; picker-hours = lines per day ÷ pick rate; pickers per shift = ceil(picker-hours ÷ productive hours per picker per shift)
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