METHOD & GUIDANCE
How this calculation works
Keep every input on the same time basis—for example, one month or one financial year—and do not mix cash figures with accrual figures. Tool IQ recalculates every output immediately; nothing you enter is saved or sent to us.
How to use the result
Set the reorder trigger from observed demand and supplier lead time, then review safety stock when demand variability or supplier reliability changes.
Worked example
Demand of 25 units a day over a 12-day lead time uses 300 units; adding 100 safety units produces a 400-unit reorder point.
Common mistakes
- Using peak demand as the average without adjusting safety stock.
- Ignoring supplier processing or transport days.
- Treating stock already on order as unavailable.
Frequently asked questions
Is the reorder point calculator free?
Yes. It requires no account and stores no calculation inputs.
Can I use the answer for a formal filing?
No. It is a planning estimate, not accounting, tax, legal or investment advice. Confirm material decisions with a qualified professional.
Which period should I use?
Keep every input on the same basis—for example, one month or one financial year. Use current figures first, then save a cautious scenario for comparison.
Continue the decision
- Inventory Turnover Calculator — Measure how quickly stock turns into sales.
- Cash Runway Calculator — Estimate how many months your available cash will last.
Popular small-business decision paths
- Build the next cash-flow forecast
- Measure how quickly invoices become cash
- Estimate how long available cash will last
Method reviewed 5 August 2026. Figures are illustrative and calculated locally in your browser. Official sources are linked where a rule or obligation affects how the result should be used. Read the Tool IQ calculation standard for our checking process, limitations and corrections policy.