How do you calculate good SKU replenishment quantity?

Multiply output per cycle by available cycles to get gross capacity, then multiply by uptime and first-pass yield. For 4 units/cycle over 480 cycles at 90% uptime and 97% yield: 4 x 480 = 1,920 gross, then x 0.90 x 0.97 = 1,676 good units.

What's the difference between gross and good capacity?

Gross capacity is the theoretical maximum (1,920 units here) assuming no stoppages and zero scrap. Good capacity (1,676 units) is what you can actually ship after downtime and yield losses, which is the number you should plan around.

How much do downtime and yield cost on this run?

Downtime at 90% uptime removes 192 units from the 1,920 gross, and the 97% first-pass yield removes a further 51.84 units. Together they cut about 244 units, or roughly 13% of theoretical output.

What is a good first-pass yield for office product lines?

High-speed converting and packaging lines for paper and stationery commonly run 96-99% first-pass yield. A 97% figure is solid; if you fall below about 95%, scrap and rework start eating meaningfully into replenishment capacity.

Why use first-pass yield instead of final yield?

First-pass yield captures units that need rework before they're sellable, which still consumes cycle time. Using final yield after rework would overstate how much usable product the window actually delivers.

How do I improve the good replenishment quantity?

Add cycles, raise output per cycle, or — usually cheapest — close the uptime and yield gaps. Here lifting uptime from 90% to 95% alone would recover roughly 93 units without buying any new capacity.

Office, School & Institutional Products calculator

SKU replenishment quantity Calculator

SKU replenishment quantity is the count of sellable units a line can realistically produce to refill a specific stock-keeping unit over a planning window. For office, school, and institutional products — think reams of paper, pen multipacks, classroom storage bins — replenishment planning has to hit narrow seasonal demand spikes, so overstating capacity leaves shelves empty during back-to-school and understating it ties up cash. Production planners and inventory managers use this to convert raw machine cycles into a trustworthy good-unit number after deducting downtime and scrap. It bridges the gap between what a line could make on paper and what will actually be available to ship.

What this calculator does

Estimate SKU replenishment quantity for office, school and institutional products using production-ready inputs so teams can confirm whether capacity can cover demand before committing the schedule.
Use it when sku replenishment quantity in office, school and institutional products is being asked to take on more work and you need to know if there is room.
It computes the good (sellable) replenishment quantity by taking gross capacity and discounting it for expected uptime and first-pass yield.

Formula used

Gross SKU replenishment quantity capacity = SKU replenishment quantity output per cycle × available SKU replenishment quantity cycles
Good SKU replenishment quantity capacity = gross capacity × expected SKU replenishment quantity uptime × expected SKU replenishment quantity first-pass yield

Inputs explained

Replenishment output per production cycle:
Available production cycles in the window:
Expected line uptime:
Expected first-pass yield:

How to use the result

Use it when sizing a production run to refill a SKU ahead of a demand window, or when checking whether a line can cover a replenishment order on time.
It uses single average uptime and yield figures, so it won't capture a line that degrades over a long run or a SKU with bimodal scrap behavior.

Common questions

How do you calculate good SKU replenishment quantity? Multiply output per cycle by available cycles to get gross capacity, then multiply by uptime and first-pass yield. For 4 units/cycle over 480 cycles at 90% uptime and 97% yield: 4 x 480 = 1,920 gross, then x 0.90 x 0.97 = 1,676 good units.
What's the difference between gross and good capacity? Gross capacity is the theoretical maximum (1,920 units here) assuming no stoppages and zero scrap. Good capacity (1,676 units) is what you can actually ship after downtime and yield losses, which is the number you should plan around.
How much do downtime and yield cost on this run? Downtime at 90% uptime removes 192 units from the 1,920 gross, and the 97% first-pass yield removes a further 51.84 units. Together they cut about 244 units, or roughly 13% of theoretical output.
What is a good first-pass yield for office product lines? High-speed converting and packaging lines for paper and stationery commonly run 96-99% first-pass yield. A 97% figure is solid; if you fall below about 95%, scrap and rework start eating meaningfully into replenishment capacity.
Why use first-pass yield instead of final yield? First-pass yield captures units that need rework before they're sellable, which still consumes cycle time. Using final yield after rework would overstate how much usable product the window actually delivers.

Last reviewed 2026-05-12.