Choose the Inventory Measure That Fits the Decision
Different inventory measures answer different questions. Reorder point asks, “When should I place a purchase order?” It combines expected demand during supplier lead time with a buffer, so it should drive a buying review. Minimum stock is the floor you do not want to cross; use it as an exception alert, especially for items that would be difficult to replace quickly.
Days of cover translates units into time: 60 sellable units divided by average sales of 3 per day equals 20 days. Use it to compare products with different sales rates, but check whether the demand period is representative. Cash tied up is units multiplied by unit cost. Forty treadmills at AED 1,500 tie up AED 60,000 before sale. Use this measure when deciding whether a reorder, clearance action or assortment change deserves capital. ORVX reports remaining stock value and dead stock; its inventory reorder calculator can help test the inputs.
| Measure | What it measures | Action it should drive |
|---|---|---|
| Reorder point | Stock level at which replenishment should be reviewed | Prepare or place a purchase order |
| Minimum stock | Lowest acceptable stock level | Investigate an exception before availability suffers |
| Days of cover | How long current sellable stock may last | Compare urgency across products |
| Cash tied up | Capital currently invested in inventory | Prioritise buying, clearance or assortment decisions |
Forecast Demand From Your Own Sales
Forecast each SKU from delivered units by week or month, removing cancellations: 12 treadmill orders minus 3 cancellations = 9 delivered units. Show returns separately because they affect realised sales and available stock.
Treat stockouts as missing demand: 60 units sold during six available weeks equals 10 per week; two weeks out of stock makes an eight-week average 7.5. Record stockout dates and use in-stock periods for the baseline.
Use only comparable promotions: if 10 rose to 12 units per week, plan on 12 for the upcoming promotion and label the assumption. Compare actual delivered units, cancellations and stockouts. Shopify-connected reporting in ORVX keeps product and order data together; the inventory reorder calculator tests inputs.
Worked example with sample numbers
This example is illustrative. It uses sample numbers for a fitness equipment store selling in the UAE. They are made up to show the method, they are not a benchmark, and your own figures will differ.
Formula: Reorder point = daily units x (lead time + safety days).
| Input | Value |
|---|---|
| Units sold per day | 4 |
| Supplier lead time in days | 30 |
| Safety cover in days | 11 |
| Reorder at | 4 x (30 + 11) = 164 units |
| Cash tied up at cost | AED 19363.90 |
Run the same sum with your own numbers in the free calculator, or browse guides for sellers in the UAE and more fitness equipment guides.
General information only: tax, duty and import rules change and depend on your situation, so check with an accountant or the official source before acting.
Eligible Shopify stores can see these numbers for their own store through the Founding 10,000 offer.
Set Lead Time and Safety Stock for UAE Supply
Measure supplier lead time from purchase-order confirmation to sellable stock in your UAE warehouse: production and packing, booking and international transit, customs clearance, port handling and final delivery. Record each stage from purchase orders in calendar days, with separate averages for air, sea and each supplier; a quoted 20 days may exclude scheduling, vessel availability, document checks, inspection, unloading and inland transport.
Safety stock covers demand and lead-time uncertainty. At 10 units per week, four weeks means 40 units; a one-week delay adds 10 units. Wider sales swings need more protection, while reliable suppliers may need less. Use your own highest practical variability, not arbitrary months, and keep production, transit, clearance and delivery visible in the inventory reorder calculator.
Calculate the Reorder Point
The reorder point (ROP) is the stock level at which you place the next purchase order: ROP = expected demand during lead time + safety stock. If a treadmill sells 3 units per day, lead time is 20 days, and safety stock is 15 units, the ROP is (3 × 20) + 15 = 75 units.
When your available inventory reaches 75 units, place the planned order; do not wait until physical stock reaches zero. Use a measure that reflects sellable stock and accounts for units already committed and confirmed inbound stock, so customer orders or shipments do not distort the trigger. The reorder point answers when to order. Order quantity answers how much to buy, so keep those decisions separate. Review the trigger when sales velocity, supplier timing or safety-stock assumptions change. Use the inventory reorder calculator to check the arithmetic.
What Stock Costs to Hold
At one landed cost per unit, track on-hand, inbound and committed purchase orders. On-hand is cash in sellable units; inbound has left the supplier and is in transit, including amounts paid plus committed freight or duty needed to make it sellable. A purchase order is future cash exposure, not inventory. Eight treadmills on hand, four inbound and six accepted at AED 2,500 each mean AED 20,000, AED 10,000 and AED 15,000 respectively: 12 current units and AED 45,000 total exposure. Use on-hand for warehouse cash, on-hand plus inbound for availability, and all three for affordability; the inventory reorder calculator supports arithmetic.
| Category | Units | Cost per unit | Value |
|---|---|---|---|
| On hand | 8 | AED 2,500 | AED 20,000 |
| Inbound | 4 | AED 2,500 | AED 10,000 |
| Committed purchase order | 6 | AED 2,500 | AED 15,000 |
| Total exposure | 18 | AED 2,500 | AED 45,000 |
Plan for Seasonal Peaks in the UAE
Use an event calendar alongside the SKU forecast for promotions, New Year, Ramadan and Eid, school breaks, supplier closures and delivery constraints. Compare each with the same period in your own prior sales, not a generic uplift: discounts can pull purchases forward and leave excess stock.
Separate baseline from event demand. If a treadmill normally sells 20 units weekly but 35 during a previous two-week campaign, add (35 − 20) × 2 = 30 units to planned requirements and, after checking margin, cash and dates, to the purchasing calendar.
Order early for supplier shutdowns, reduced production, port/customs delays and courier limits. Confirm last order and first dispatch dates in writing; extend affected SKUs’ planning lead time and review promotion dates, advertising budgets and inbound deliveries, or normal-week reorder points may trigger too late.
How to Read the Worked Example
Read the worked example from left to right and check that every figure uses the same SKU, unit and time basis. First, confirm the forecast period: weekly demand must not be compared with a monthly lead time. The lead-time demand should equal the forecast rate multiplied by the supplier-to-warehouse lead time. Next, verify the safety-stock line separately; it is the buffer, not another estimate of normal demand.
Add those two lines to reproduce the reorder point: lead-time demand + safety stock = ROP. The ROP is a unit threshold, not the number of units to order. For the AED cash requirement, identify what the example is measuring. Cash for a replenishment order is order quantity × landed cost per unit. Cash tied up at the ROP is ROP units × landed cost per unit. If stock on order or in transit is included, check that it is not counted twice. You can test the arithmetic with the inventory reorder calculator.
A practical inventory plan links each purchase decision to a defined measure: forecast demand sets the expected run rate, local lead time determines how long stock must cover, safety stock protects against uncertainty, and the reorder point signals when to buy. Comparing those figures with the AED value of stock on hand and inbound commitments helps a UAE fitness equipment store protect availability without treating every unit as equally urgent.
Sources
- Value Added Tax (VAT) (UAE Ministry of Finance, checked 26 October 2026).
How this page was made: drafted with AI from a brief, then checked by automated rules for arithmetic, sources and duplication. The sample numbers were calculated, not reported.