Seller and business calculators: guides
216 guides in this section. Pick the question closest to yours, or browse by tool. Page 8 of 9
- My report shows both reach and impressions: which goes in the impressions field, and what changes if I use reach?Reach counts people; impressions count views. Enter reach instead and CTR and CPM both rise by roughly the frequency. A worked example with the same campaign.
- As a freelance marketer, how do I produce a clean monthly metrics summary for a client from raw platform totals?For freelance marketers: turn four raw platform totals into five consistently defined metrics, formulas included, with month-on-month comparison and warnings kept in.
- I import from a supplier in China by sea: how do I work out the lead time to use for my reorder point?Lead time is not the sailing days. It runs from sending the order until goods are ready to sell: production, sea freight, clearance and delivery. See how far it moves.
- My sales double in Ramadan and my supplier slows down before Eid: how do I choose safety stock for that season?The calculator assumes steady demand, so run the season on its own: its average sales, its busiest day and the longest delay you saw last season. With numbers.
- My supplier delivers the same day, so why is my reorder point exactly equal to my safety stock?A zero lead time means nothing sells while you wait, so the reorder point is just the safety stock. But is same-day delivery really zero? A one-day example.
- My store report only gives me monthly sales: how do I turn that into the average daily demand the calculator needs?Divide units sold by the days the product was actually in stock, not every day of the month, or the reorder point comes out too low. A worked example with stockout days.
- My stock has fallen below the reorder point but an order is already on its way: should I order again?Compare the reorder point with stock on hand plus stock already ordered, not the shelf alone. A worked example shows when a second order doubles up and when it is due.
- One of my products sells only two a week: how do I get a sensible reorder point for such a slow item?Enter daily demand as a decimal and the calculator rounds the point up to whole units. A slow-seller example, and why safety stock matters more than demand here.
- I sell through Amazon FBA: what should my lead time include before stock becomes sellable at the fulfilment centre?Lead time ends when stock is sellable, not when it reaches you. With FBA, add inbound shipping and check-in at the fulfilment centre. See what ten extra days do.
- Why does the derive-from-maximums option give me a huge safety stock, and when is that too cautious?The rule multiplies your worst day by your worst delay, two events that rarely coincide, so safety stock can be many times normal usage. When that is too cautious.
- I get an error that my maximum daily demand is below the average and no safety stock is calculated: what did I enter wrong?A maximum cannot be below its own average, so the calculator refuses rather than give a negative safety stock. Usual causes: swapped fields or mixed periods.
- My supplier quotes 5 working days but my shop sells every day: do I enter lead time in working days or calendar days?Use the same kind of day in both fields: if daily sales cover every day of the week, convert the supplier's working days to calendar days. An example with a weekend.
- I order from my supplier on the first of every month: is ordering at a reorder point better than a fixed date?A reorder point brings orders forward in busy weeks and holds them back in quiet ones; a fixed date is simpler but can run dry. A busy-month example and how to use both.
- Are my sales figures and supplier lead times saved or sent anywhere when I use the reorder point calculator?Your sales speed and supplier lead times are what competitors would love to know. The calculator runs in your browser, sends nothing and never connects to your store.
- I sell the same product on my own store and on Noon from one shared stock: how do I calculate the reorder point?If both channels ship from the same stock, add their daily sales into one figure. If part of your stock sits in the marketplace's warehouse, calculate it separately.
- What number should I set as the low-stock alert in my inventory app or spreadsheet?Set the reorder point in whole units as the alert level, so the alert fires while you still have enough for the wait and the buffer. When shelf-only alerts mislead.
- The calculator offers divisors of 5000 and 6000: which one applies to my shipment?The divisor is set by your carrier for the service you use, not chosen by you. Here is how much 5000 versus 6000 changes the same box, with worked figures.
- I ship US online orders to Dubai through a package forwarder that bills in pounds: how do I check its dimensional weight?Shipping US orders to Dubai through a forwarder that bills in pounds? Enter inches, pounds and its divisor to see the chargeable weight before the bill arrives.
- I measured my box in centimetres but my carrier gives the divisor per cubic inch and pound: do I have to convert everything first?Do not convert by hand. Keep centimetres, set the divisor basis to in³ per lb, and the calculator converts the volume exactly and shows the result in pounds and kilos.
- I am sending 10 cartons of the same size and weight: how do I get the chargeable weight for the whole shipment?Enter one carton and set the quantity to 10: the calculator shows the chargeable weight per carton and for the whole shipment. Then check how your carrier totals it.
- My courier invoice shows a slightly higher weight than the calculator gave me: is the calculator wrong?Usually not. Couriers round dimensions and weight under their own rules, and the calculator shows the unrounded figure. A worked example shows where the gap comes from.
- I ship posters in cylinder tubes and clothes in soft mailer bags: how do I measure those for volumetric weight?The calculator assumes a rectangular box, so measure a tube as length by diameter by diameter and a soft bag at its fullest. Worked figures show what bulging adds.
- I ship books and perfume in small boxes: why does the calculator say the actual weight applies, not the volumetric one?Dense products weigh more than their box volume implies, so the actual weight is billed. Why a smaller box saves you nothing here, and what does cut the cost.
- My carrier gave me a divisor that is not in the list: how do I enter it?Type the number in Divisor value and set its basis the way your carrier states it. Why the wrong basis gives a wildly wrong weight, with a worked example.
