Use this logistics calculation for a transparent shipment, inventory, warehouse, customs, packaging, carrier, or service-level estimate when the governing units and business rules are explicit.

Actual units

Actual demand units per period.

Forecast units

Forecasted units per period, aligned to actuals.

Score demand-plan accuracy with weighted mean absolute percentage error (total absolute error over total actual demand) plus signed bias, the volume-weighted standard for SKU forecasts. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Absolute error

Sum of absolute forecast errors in units.

Actual total

Sum of actual demand in units.

Bias percent

Signed forecast bias in percent of actual total.

WMAPE percent

Weighted MAPE in percent of total actual demand.

• Carrier tariffs, customs rules, dangerous-goods requirements, hours-of-service rules, surcharges, port terms, dimensional divisors, and service definitions vary by jurisdiction, contract, date, mode, and commodity. A calculation is not a booking, classification, or compliance determination.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Verify current carrier and authority documents, retain shipment dimensions and timestamps, test boundary cases, and reconcile estimates against invoices and operational scans.

• Landed Cost Duties and Taxes Total

  Estimate landed cost with a supplied CIF-style model: goods plus freight and insurance, duty on that customs value, tax on customs value plus duty, and separate import fees. Confirm the actual valuation and tax bases for the destination jurisdiction.

• Additional Handling Fee Trigger Checker

  Check a rectangular parcel against configurable longest-side, second-longest-side, actual-weight, and length-plus-girth thresholds; packaging and service-specific rules are outside this numeric screen.

• Backorder Rate Percent Calculator

  Compute the backorder rate as backordered line items over total ordered line items.