ABC Analysis Calculator
Classify inventory into A, B, and C categories based on annual value using Pareto analysis to prioritize stock management efforts.
Free Inventory Calculators
22 toolsInventory control, EOQ, ABC analysis, and costing calculators. Browse our free inventory tools below — no sign-up required.
ABC-XYZ Matrix Calculator
Combine ABC value analysis and XYZ demand variability into a 9-cell matrix to set differentiated inventory management strategies.
Cycle Count Planner Calculator
Plan cycle count frequency by ABC classification. Calculate annual counts per SKU class and total daily counting workload for your warehouse.
Days of Supply Calculator
Calculate how many days your current inventory will last based on average daily usage. Plan replenishment before stock runs out.
Dead Stock Calculator
Identify and value dead stock — inventory with zero sales over a defined period. Calculate total capital tied up in unsellable items.
FIFO Inventory Cost Calculator
Calculate cost of goods sold and ending inventory using the FIFO method. Assign oldest purchase costs to sales first for accurate COGS.
Fill Rate Calculator (Unit Fill Rate)
Calculate unit fill rate by dividing units shipped from stock by total units ordered. Measure inventory service performance accurately.
Holding Cost Percentage Calculator
Calculate your true inventory holding cost percentage by summing capital, storage, insurance, and obsolescence costs as a share of value.
Inventory Accuracy Calculator
Calculate inventory record accuracy by comparing matching records to total records. Measure how well your WMS data reflects actual stock.
Inventory Write-Down Calculator
Calculate inventory write-down amounts when net realizable value drops below book value. Determine the impact on COGS and financial statements.
LIFO Inventory Cost Calculator
Calculate cost of goods sold and ending inventory using the LIFO method. Assign newest purchase costs to sales first for tax-efficient COGS.
Line Fill Rate Calculator
Calculate line fill rate by dividing order lines shipped complete by total order lines. Measure SKU-level fulfillment performance.
Obsolescence Reserve Calculator
Calculate inventory obsolescence reserves using age-based tiered factors. Estimate reserves by multiplying units, cost, and aging discount rates.
Order Fill Rate Calculator
Calculate the percentage of customer orders shipped complete from stock. Measure order-level inventory service performance easily.
Ordering Cost Calculator
Calculate total annual ordering cost by dividing annual demand by order quantity and multiplying by the fixed cost per order placed.
Perfect Order Rate Calculator
Calculate your perfect order rate by combining on-time delivery, in-full shipment, damage-free, and documentation accuracy percentages.
Perpetual vs Periodic Inventory Calculator
Compare costs of perpetual (WMS + real-time tracking) vs periodic (manual counts) inventory systems including labor, tech, and stockout risk.
Slow-Moving Inventory Calculator
Identify slow-moving inventory where demand falls below a threshold. Calculate excess stock value and recommend disposition actions.
Stockout Cost Calculator
Estimate the total cost of inventory stockouts including lost sales margin, backorder costs, and customer churn impact on revenue.
Total Inventory Cost Calculator
Calculate total inventory cost by summing carrying costs, ordering costs, and stockout costs to find your true inventory expense.
Weeks of Supply Calculator
Calculate how many weeks your current inventory will cover based on average weekly usage. Ideal for medium-term supply planning.
Weighted Average Cost Calculator
Calculate inventory cost using the weighted average method. Divide total cost by total units for a blended cost per unit across all purchases.