When should I reorder a product?
When available stock position reaches the reorder point derived from demand, lead time and safety stock.
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When should you reorder products?
Calculate reorder point, stock coverage and quantity with lead time and reserved units.
Calculate nowWhat problem does this tool solve?
Stockouts lose sales; excess stock ties up capital. Incoming stock counts only when its arrival is timely.
What do you get?
Available stock, reorder point, coverage, timely incoming units and reorder need.
Worked example
Example: 5 units per day × 10 days lead time + 20 safety units = a 70-unit reorder point.
Practical questions on this topic
How do I calculate a reorder point?
Multiply average units sold per day by lead time in days, then add the safety stock.
How many days of stock remain?
Divide available units by daily demand. With zero daily demand, coverage in days is undefined.
How can I avoid stockouts?
Use observed demand, realistic delivery times and safety stock, and monitor delays in incoming orders.
How much capital is tied up in inventory?
Multiply physical units by entered unit cost; sum across products for the store total.
How do I choose safety stock?
A fixed buffer is a simple start. Variable demand needs measured volatility, delivery variation and a service target.
Frequently asked questions
Can I import Shopify inventory?
This version uses manual entries; no authorized import is connected.
Can I calculate multiple products?
Yes, one at a time. There is no bulk import.
What if daily sales are zero?
Coverage is marked unavailable; the tool never divides by zero.
Do incoming orders count?
Only with an entered quantity and arrival day, and when they are due in time.
Is the order quantity definitive?
No. It follows the planning assumptions you entered.
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