Free online tools for inventory planning, logistics optimization, and supply chain analytics. Used by professionals at Fortune 500 companies and growing businesses worldwide.
Compare air, ocean, rail, and truck shipping to find the optimal freight mode. Analyzes cost, transit time, reliability, and environmental impact.
Optimize stock levels, reorder points, and order quantities to minimize costs while maintaining service levels.
Calculate optimal safety stock levels to prevent stockouts while minimizing carrying costs. Uses demand variability and lead time to determine buffer inventory.
Determine when to place new orders based on lead time demand and safety stock. Ensures continuous supply without overstocking.
Find the optimal order quantity that minimizes total inventory costs including ordering and holding costs.
Track key performance indicators for inventory efficiency, turnover, and carrying costs.
Measure how efficiently inventory is sold and replaced over a period. Higher turnover indicates better inventory management.
Calculate the percentage of customer demand fulfilled from available stock. A key metric for customer service levels.
Calculate the total cost of holding inventory including storage, insurance, depreciation, and opportunity costs.
Calculate how many days it takes to sell through current inventory. Lower DSI indicates faster inventory movement.
Measure and improve demand forecast accuracy with industry-standard metrics.
Calculate shipping costs, container loads, and compare freight modes for optimal transportation.
Optimize container utilization by calculating how many units fit in standard shipping containers (20ft, 40ft, 40ft HC).
Calculate the shipping cost allocated to each product unit. Essential for accurate landed cost and pricing decisions.
Estimate shipping costs based on weight, dimensions, distance, and shipping mode. Compare carrier rates instantly.
Convert between cubic meters (CBM) and cubic feet (CFT). Calculate volume from dimensions or convert directly between units.
Compare air, ocean, rail, and truck shipping to find the optimal freight mode based on cost, speed, and reliability.
Manage lead times, inventory accuracy, and operational planning calculations.
Calculate total lead time from order placement to delivery. Includes processing, manufacturing, and transit time.
Measure the accuracy of inventory records compared to physical counts. Critical for reliable planning and operations.
Add or subtract days, weeks, months, and years from any date. Calculate date differences, find weekdays and week numbers.
Calculate dates based on business days, excluding weekends and holidays. Perfect for delivery date estimation.
A supply chain calculator is a specialized tool that helps businesses compute key metrics for inventory management, logistics, and operations. These calculators use industry-standard formulas to determine optimal stock levels, shipping costs, forecast accuracy, and other critical supply chain parameters.
Safety stock is calculated using the formula: Safety Stock = Z × σ × √L, where Z is the service level factor (e.g., 1.65 for 95% service level), σ is the standard deviation of demand, and L is the lead time. Our Safety Stock Calculator automates this calculation and provides recommendations based on your specific parameters.
EOQ (Economic Order Quantity) is the optimal order size that minimizes total inventory costs, including ordering costs and holding costs. The formula is EOQ = √(2DS/H), where D is annual demand, S is ordering cost per order, and H is holding cost per unit. Using EOQ helps businesses reduce overall inventory expenses.
Improve inventory turnover by: 1) Reducing safety stock levels where appropriate, 2) Implementing better demand forecasting, 3) Using ABC analysis to focus on high-value items, 4) Negotiating shorter lead times with suppliers, and 5) Eliminating slow-moving or obsolete inventory. Our Inventory Turnover Calculator helps you track and benchmark your performance.
MAPE (Mean Absolute Percentage Error) measures forecast accuracy as a percentage. It is calculated as the average of absolute percentage errors between forecasted and actual values. A lower MAPE indicates better forecast accuracy. Generally, MAPE under 10% is considered excellent, 10-20% is good, and over 20% may need improvement.
Choose air freight for: urgent shipments, high-value goods, perishables, and small volumes. Choose ocean freight for: large volumes, heavy goods, non-urgent shipments, and cost-sensitive products. Our Freight Mode Estimator compares total costs including transit time, handling, and inventory carrying costs to recommend the optimal mode.
SCMulator provides enterprise-grade supply chain calculators used by inventory planners, logistics managers, and supply chain analysts. Each calculator uses industry-standard formulas validated by supply chain experts.
All 16 calculators are completely free to use with no account required. Create a free account to save your calculations and sync them across your devices.
Get calculations instantly in your browser. No downloads, installations, or spreadsheets required. Export results to PDF or Excel for reports and presentations.