Stop Guessing.
Start Optimizing Your Inventory.
Six free tools that eliminate overstocking, understocking, and dead capital. Built for operations teams at distributors, wholesalers, and manufacturers.
Your Complete Inventory Operations Toolkit
Six free calculators. Use them independently or together to build a complete inventory strategy.
Stock Optimizer
Enter your current inventory levels, demand rate, lead time, and carrying cost to get recommended stock levels and estimated savings.
- Optimal reorder point calculation
- Over/under-stock assessment
- Carrying cost analysis
- Potential savings estimate
Demand Forecaster
Enter 6–12 months of historical sales data, toggle seasonality, and get 30/60/90-day forecasts with confidence intervals.
- 30 / 60 / 90-day projections
- Confidence intervals
- Seasonality adjustment
- Trend direction indicator
Safety Stock Calculator
Calculate optimal safety stock levels and reorder points based on demand variability, lead time, and your target service level.
- Z-score based calculation
- Multiple service level modes
- Up to 5 SKUs free
- Reorder point included
Dead Stock Calculator
Identify how much capital is tied up in obsolete inventory. Enter your SKUs and get an instant assessment with risk tiers.
- 3-tier risk classification
- Capital at risk calculation
- Up to 10 SKUs free
- Disposal cost estimate
Reorder Point Calculator
Know exactly when to reorder — every time. Enter usage, lead time, and order cost to get your reorder point, optimal quantity, and annual order cost.
- EOQ-based reorder quantity
- Days-until-reorder countdown
- Urgency status (urgent / healthy)
- Annual order frequency & cost
Inventory Waste Estimator
Quantify the true cost of spoilage, obsolescence, and damage in your warehouse. See a breakdown by category and your ROI from waste reduction.
- Spoilage / obsolescence / damage split
- Annual waste cost in dollars
- Waste reduction ROI estimate
- 4-tier severity assessment
Inventory Decisions Should Be Data-Driven
Most SMBs manage inventory by gut feel. These tools give you the math in seconds.
Cut Carrying Costs
Excess inventory ties up capital and incurs storage, insurance, and obsolescence costs. The Stock Optimizer shows you exactly how much you're overspending.
Prevent Stockouts
Stockouts cost 2–3× more than overstock in lost sales and expediting fees. Demand Forecaster and Safety Stock Calculator work together to keep you covered.
Forecast Confidently
Statistical forecasting with seasonality adjustment means you're buying the right amounts at the right time — not reacting to last week's sales.
Eliminate Dead Stock
The average distributor has 10–15% of inventory in dead or slow-moving items. Surface them early and recover cash before write-offs are required.
Need More Than Calculators?
SupplyChainStack connects to your real data — ERP, WMS, or CSV upload — for automated daily inventory intelligence.