Fulfillment Network Planner Calculator

Build smarter fulfillment plans for faster customer delivery. Compare centers, costs, and capacity before committing. See the best network mix in minutes, every time.

Inputs

Enter order volume, service goals, and node economics. Then submit to get the full plan.

Results appear above this form after submit.

Demand and service targets

Used to compute variable costs and allocations.
Peak monthly orders = monthly orders × peak factor.
Used for target coverage and delivery warnings.
Desired share of orders at or below the target days.
Applied to handling and packaging costs only.

Returns and split-shipments

Returns = orders × return rate.
Labor and restock effort per return.
Carrier or label cost per return.
Orders needing multiple parcels or nodes.
Extra packaging, touches, or additional labels.

Inventory and holding

Distributed to nodes by allocation percent.
Used for monthly holding cost estimate.
Monthly holding = value × rate ÷ 12.

Fulfillment nodes (up to 3)

Node 1 is always enabled. Toggle nodes 2–3 as needed.
Node 1
Enabled

Handling and packaging can be discounted by the efficiency input.
Node 2

Handling and packaging can be discounted by the efficiency input.
Node 3

Handling and packaging can be discounted by the efficiency input.
Allocation sum: for enabled nodes
Tip: If allocations don’t add up to 100%, calculations will normalize them.

Formula used

  • Peak orders = Monthly orders × Peak factor.
  • Allocated orders = Monthly orders × Allocation%.
  • Storage cost = Allocated inventory cu ft × Storage rate.
  • Handling cost = Orders × Pick/pack × (1 − discount).
  • Packaging cost = Orders × Packaging × (1 − discount).
  • Shipping cost = Orders × Shipping cost per order.
  • Returns cost = Orders × Return rate × (Processing + Return shipping).
  • Split cost = Orders × Split rate × Split surcharge.
  • Holding cost = Inventory value × Carrying% ÷ 12.
  • Total cost = Sum of all monthly cost buckets.

Target coverage is the sum of allocations where node delivery days are at or below your target. Peak utilization estimates each node’s peak daily orders versus its stated capacity.

How to use this calculator

  1. Enter monthly orders and a realistic peak factor for surges.
  2. Set delivery target days and the desired coverage percentage.
  3. Enter inventory volume/value and returns or split-shipment assumptions.
  4. Fill node details: allocation, costs, delivery days, and capacity.
  5. Submit to see KPIs, breakdown tables, insights, and exports.

Example data table

Use this as a reference for typical starting assumptions. Adjust to your contracts and service maps.

Example node Allocation Fixed/mo Storage $/cu ft/mo Pick/pack Packaging Ship/order Delivery days Capacity/day
Central Hub 55% $38,000 0.85 1.10 0.35 4.25 2.2 1,400
East Node 30% $26,000 0.95 1.20 0.40 3.95 1.8 900
West Node 15% $24,000 0.90 1.25 0.45 4.10 2.0 750

Demand and peak planning

Use monthly orders and a realistic peak factor to size the network for surges. Peak pacing converts monthly demand into a daily workload estimate, which is then split by allocation. This highlights when a single hub becomes a bottleneck and when a secondary node reduces risk. For seasonal businesses, compare multiple peak factors and keep the highest scenario as the capacity baseline for staffing and carrier commitments. Track the peak daily figure against pick lines, packing stations, and carrier pickup windows to avoid hidden constraints.

Allocation and delivery coverage

Allocation percentages represent where orders are fulfilled, not where customers live, so delivery days must reflect your service map. Target coverage adds the allocations of nodes that can hit the delivery goal. If coverage falls short, shifting volume toward faster nodes improves the KPI, but may increase fixed overhead or storage. Use the node table to balance service improvement against the cost per order impact of reallocations.

Cost drivers and sensitivity

Total monthly cost combines fixed overhead, inbound freight, storage, handling, packaging, shipping, returns, split shipments, and inventory holding. Shipping and handling typically dominate variable spend, while holding cost ties up capital. Apply the efficiency discount to model process gains from slotting, automation, or packaging redesign. Sensitivity testing is straightforward: raise shipping cost per order by 5–10% to see exposure to carrier rate changes.

Capacity and resilience checks

Capacity is evaluated using peak daily orders versus each node’s stated throughput. Utilization near 95% signals higher overtime, slower cutoffs, and missed SLAs. Consider adding shifts, reallocating volume, or temporarily routing to a third node. Also evaluate returns and split shipment assumptions, because both increase touches and consume labor. A resilient plan maintains buffer capacity at the fastest node during peak weeks.

Operational alignment and reporting

After calculating, export CSV for spreadsheets and PDF for quick reviews. Share cost buckets with finance, utilization warnings with operations, and delivery coverage with customer experience teams. Keep a monthly baseline, then rerun after contract renewals, carrier changes, or new node launches. Consistent reporting helps spot drift in cost per order and prevents surprise SLA degradation as volumes grow over time.

FAQs

How does the planner decide whether my delivery goal is met?

It adds the allocation percentages of nodes whose average delivery days are at or below your target. The result is your delivery target coverage, which you can compare to the coverage goal you set.

Why do allocations get normalized automatically?

If enabled node allocations do not total 100%, the calculator scales them so the enabled nodes sum to 100% for fair comparisons. This prevents undercounting costs and misreading target coverage.

What does peak utilization represent?

Peak utilization estimates peak daily orders for each node divided by its daily capacity. Values above 85% merit monitoring, and values near 95% indicate limited buffer for delays, absenteeism, or carrier cutoff issues.

How is the efficiency discount applied?

The discount reduces handling and packaging costs only, modeling process improvements like better pick paths, automation, or packaging standardization. Shipping, storage, and fixed overhead are not discounted because they depend on contracts and space.

Where do returns and split shipments affect cost?

Returns add processing and return shipping costs based on the return rate. Split shipments add a surcharge for extra touches and labels. Both can indirectly increase labor needs, so validate assumptions with recent operational data.

What should I do with the CSV and PDF exports?

Use CSV for deeper analysis in spreadsheets, scenario comparisons, and charts. Use the PDF for quick stakeholder reviews, approvals, and meeting notes. Export after each major rate, volume, or network change.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.