Overs, unders, and the delivery range
Custom print runs almost never deliver the exact quantity ordered. The press wastes material getting up to color (make-ready), roll and sheet lengths vary, and the line doesn’t stop on a round number — so the industry ships within an agreed over/under allowance and bills you for what actually arrives. This calculator turns your quantity and that allowance into the real range you should expect.
The allowance is a contract term, not a law, which is why this tool asks you to enter it rather than guessing. A long-standing trade convention lands around 10% in either direction, but it varies a lot: digital printing is usually near-exact, while tooling-heavy flexo and gravure runs can carry a wider band. The number that matters is the one on your quote.
How to guarantee a minimum count
- Order up. If you must end with a specific quantity, order enough that even the maximum under-run still clears it (the calculator shows the figure).
- Spec a guaranteed-minimum run. Ask the printer in writing to ship no fewer than your number; expect to pay for the buffer they run to protect it.
- Go digital for exact counts. Plateless digital runs are the closest to exact and are worth it for short, count-critical jobs.
- Watch count-critical jobs. Serialized codes, regulated unit counts, and matched-component kits are where an under-run actually hurts.
Questions
What are overs and unders in printing?
Overs and unders are the industry-standard tolerance on a print run. Because presses waste material on make-ready and cannot stop on an exact number, the printer ships within an agreed allowance above or below your ordered quantity and bills you for what actually ships.
Is 10% overrun standard?
Around 10% either way is a long-standing trade convention, but it is not universal. Digital printing is usually near-exact, while tooling-heavy flexo and gravure runs can carry a wider band. Always use the allowance stated on your own quote, which is what this calculator asks for.
Do I pay for overruns?
Yes, within the agreed allowance you are billed for the quantity that actually ships, not the quantity you ordered. That is why the delivered count and the invoice can both come in above or below your order.
How do I guarantee a minimum quantity?
Either order enough that even a full under-run still clears your required count, or ask the printer for a guaranteed-minimum run in writing. The calculator shows how many to order so the under-run still delivers your target.
Which print method gives the most exact quantity?
Digital printing, because it needs no plates and little make-ready, so runs come closest to the exact ordered count. Flexo, gravure, and offset all carry more make-ready waste and therefore a wider expected range.
Want an exact price for your run?
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