Ecommerce Calculators
& Tools
Free interactive calculators to optimize your inventory, shipping, and multichannel operations. No signup required.
Safety Stock Calculator
Calculate optimal safety stock levels and reorder points to prevent stockouts while minimizing excess inventory holding costs.
Inventory Turnover Calculator
Measure how efficiently you sell and replace inventory with turnover ratio, days of inventory, and industry benchmark comparisons.
Shipping Cost Estimator
Estimate shipping costs across economy, standard, and express tiers based on package dimensions, weight, and destination.
SKU Generator
Generate well-structured SKU codes following industry best practices. Input product attributes and get formatted SKU suggestions instantly.
Demand Forecaster
Project future order volumes for the next 12 months based on historical sales data, growth trends, and seasonal patterns.
Multichannel Profit Calculator
Compare profit per unit across Amazon, eBay, Shopify, and Walmart. Factor in marketplace fees, shipping costs, and product costs.
ROI Calculator
Calculate the return on investment of switching to Nventory. Estimate time saved, error reduction, and revenue recovered from stockouts and oversells.
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