Inventory & Supply מחשבונים

Calculate optimal EOQ to minimise total inventory cost. Enter demand, ordering cost, and holding cost — see EOQ, order frequency, and total cost curve. Free.

Calculate reorder point from lead time demand and safety stock. Enter average demand, lead time, and service level — see ROP with safety stock included. Free.

Calculate safety stock level using statistical demand variability. Enter demand std dev, lead time, and service level — see safety stock and stock-out probability. Free.

Calculate inventory turnover ratio and days on hand. Enter COGS and average inventory — see turns per year with industry benchmark and cash impact. Free.

Calculate DIO from inventory turnover. Enter COGS and average inventory — see days in inventory with working capital impact. Free.

Calculate order fill rate (line fill, order fill, unit fill). Enter orders shipped complete vs total orders — see fill rate with service level interpretation. Free.

Calculate required service level and corresponding z-score for safety stock. Enter target service level — see z-score and safety stock multiplier. Free.

Calculate cost of a stockout event. Enter lost sales, expediting cost, and customer defection rate — see total stockout cost and acceptable holding cost. Free.

Calculate annual carrying cost of inventory. Enter inventory value and cost components (capital, storage, obsolescence, insurance) — see carrying cost rate. Free.

Classify inventory into A/B/C categories by value contribution. Enter SKU revenue data — see A/B/C thresholds with Pareto curve and management policy. Free.

Forecast future demand using moving average and exponential smoothing. Enter historical demand — see forecast with MAE, MAPE, and forecast error. Free.

Calculate seasonal index and adjust demand forecast for seasonality. Enter monthly demand history — see seasonal factors and adjusted forecast. Free.

Negotiate MOQ by modelling impact on unit cost, inventory, and cash flow. Enter MOQ options and demand — see optimal order quantity and working capital impact. Free.

Compare lot sizing methods (EOQ, fixed period, POQ, Silver-Meal). Enter demand and cost parameters — see total cost per method to identify optimal approach. Free.

Calculate material requirements from gross demand, on-hand, and scheduled receipts. Enter BOM and demand schedule — see net requirements and planned orders. Free.

Calculate total BOM cost for a finished product. Enter component quantities and unit costs — see material cost, waste factor, and margin at various price points. Free.

Calculate production yield rate and first-pass yield. Enter units started and units passing quality — see yield %, scrap rate, and cost of poor quality. Free.

Calculate OEE from availability, performance, and quality rate. Enter planned time, actual output, and good units — see OEE score vs world-class 85%. Free.

Calculate manufacturing cycle time per unit. Enter total production time and units produced — see cycle time with takt time comparison and capacity impact. Free.

Calculate production throughput rate. Enter units produced and time period — see throughput per hour/day with bottleneck analysis and improvement impact. Free.

Calculate takt time to synchronise production to customer demand. Enter available time and customer demand — see takt time with cycle time comparison. Free.

Calculate setup time cost impact and SMED improvement opportunity. Enter setup frequency, duration, and rate — see annual setup cost and reduction savings. Free.

Calculate changeover time impact on production capacity. Enter changeover duration and frequency — see capacity lost and recovery from changeover reduction. Free.

Calculate capacity utilization rate. Enter actual output and potential output — see utilization %, idle capacity cost, and optimal operating range. Free.

Identify production bottleneck and calculate its impact on throughput. Enter process step capacities — see bottleneck station, utilization rates, and throughput limit. Free.

Calculate the number of Kanban cards needed for a work centre. Enter demand rate, lead time, and container size — see Kanban count with WIP limit. Free.

Calculate pull system parameters including supermarket size and replenishment triggers. Enter demand variability and lead time — see pull loop design. Free.

Calculate weighted supplier performance score. Enter scores for quality, delivery, price, and responsiveness — see composite score with ranking. Free.

Calculate total vendor lead time including order processing, production, and transit. Enter each component — see total lead time with variability buffer. Free.

Calculate ROI on procurement function investment. Enter savings achieved, cost avoidance, and team cost — see procurement ROI and savings vs spend ratio. Free.

Analyse procurement spend by category and supplier. Enter spend data — see category breakdown, concentration risk, and savings opportunity estimate. Free.

Calculate required warehouse space from SKU count, inventory volume, and aisle requirements. Enter storage data — see required square footage and layout type. Free.

Calculate cost per pick and pack operation. Enter labour rate, picks per hour, and packaging cost — see cost per order line and per shipment. Free.

Calculate warehouse put-away cost per unit. Enter receiving volume, labour rate, and put-away rate — see cost per unit and annual receiving cost. Free.

Calculate warehouse slotting efficiency and travel distance savings. Enter pick velocity and slot assignments — see travel distance and productivity improvement. Free.

Calculate cost to receive and process inbound inventory. Enter receiving volume, labour, and inspection rate — see cost per PO line and total receiving cost. Free.

Calculate dock-to-stock cycle time and its inventory cost impact. Enter receiving steps and duration — see total DTS time with working capital impact. Free.

Calculate order accuracy rate and cost of errors. Enter orders shipped and error count — see accuracy %, cost of mis-ships, and improvement ROI. Free.

Calculate perfect order rate from on-time, in-full, damage-free, and correctly documented deliveries. Enter component rates — see composite perfect order %. Free.

Calculate inventory shrinkage rate and annual cost. Enter recorded vs physical inventory value — see shrinkage %, shrinkage cost, and root cause analysis guide. Free.