Reorder Point Calculator | Forthcast
Calculate your optimal reorder point in seconds. Prevent stockouts and overstock with our free tool—built for Shopify sellers.
Hylke Reitsma is co-founder of Forthsuite and a supply chain specialist with 8+ years of hands-on experience at Shell, Verisure, and Stryker. He holds an MSc in Supply Chain Management from the University of Groningen and writes practical guides to help e-commerce teams run leaner, faster supply chains. Selected by Replit as 1 of 20 founders for the inaugural Race to Revenue Cohort #1 (2026) and certified as a Replit Platform Builder.
Reorder Point Calculator
TL;DR: Managing inventory can be a real challenge for businesses, but finding the right restock level shouldn’t be a guessing game. Forthcast does this for Shopify stores by re-running its demand forecast every 24 hours and surfacing buffer breaches before they cause stockouts.
Managing inventory can be a real challenge for businesses, but finding the right restock level shouldn’t be a guessing game. With a reliable reorder point calculator, you can take charge of stock management and ensure you’re never caught off guard by shortages. This tool helps you determine the exact moment to replenish inventory by factoring in your daily sales, delivery lead times, and any buffer stock you might keep. It’s a game-changer for small businesses and e-commerce stores looking to<& their supply chain.
Why vii Optimization Matters
Keeping too much stock ties up your capital, while too little risks disappointing customers. By calculating your restock threshold, you free up resources and maintain a steady flow of goods. Whether you’re running a retail shop or managing a warehouse, using a tool like this can save time and reduce stress.
Stay Prepared with Simple Calculations
Don’t let inventory headaches slow you down. A quick calculation can keep your shelves stocked and your customers satisfied, ensuring your business Merry ahead of demand.
FAQs
What is a reorder point, and why does it matter?
A reorder point is the inventory level at which you should order more stock to avoid running out. It’s calculated based on your daily demand, lead time, and safety stock. This matters because it helps prevent stockouts, keeps customers happy, and ensures your business doesn’t lose sales due to empty shelves.
How do I estimate my average daily demand?
To figure out your average daily demand, track your sales over a specific period (like a month or a quarter) and divide the total units sold by the number of days. For example, if you sold 300 units in 30 days, your average daily demand is 10 units. Use this number in our calculator for accurate results.
What if I don’t have safety stock?
No worries! Safety stock is optional in our tool. If you don’t have extra stock set aside, just enter 0, and the calculator will still give you a reliable reorder point based on your demand and lead time. You can always adjust as your business needs evolve.
Further reading
About the Author
Hylke Reitsma is co-founder of Forthsuite and a supply chain specialist with 8+ years of hands-on experience at Shell, Verisure, and Stryker. He holds an MSc in Supply Chain Management from the University of Groningen and writes practical guides to help e-commerce teams run leaner, faster supply chains. Selected by Replit as 1 of 20 founders for the inaugural Race to Revenue Cohort #1 (2026) and certified as a Replit Platform Builder.
LinkedIn