Thirteen free tools for reorder points, landed cost, FBA send-ins and inventory health — plus a free stockout report.
Daily sales, lead time and safety stock → reorder level.
Z-score buffer from demand variability.
How many days until a stockout at current run-rate.
Order size balancing ordering and holding cost.
Product, freight, duty and fees per unit.
Round raw need to supplier constraints.
Units → cartons → pallet estimate.
Price maths with GBP/USD toggle.
Velocity, lead time and cover → units to send.
UK fulfilment + storage estimate (Nov 2026).
Cover vs target — not official IPI.
See which products run out next. Free, no card.
Thirteen calculators on this hub, plus the free stockout report.
No for calculators. Trial unlocks live forecasts on your SKUs.
The fee page is an estimate from Amazon’s UK rate card (2 Nov 2026). Confirm in Seller Central.
No. It compares cover to your target only.
GBP/USD symbols for planning. UK FBA bands are GBP-based.
Yes. 14-day free trial, every feature, no card required.