Calculadora EOQ (Lote Econômico) Online Grátis
Economic Order Quantity for minimum inventory costs with reorder point
The EOQ Calculator finds the ideal order quantity that minimises the combined cost of ordering and holding inventory, using the Wilson EOQ formula. Supply chain managers, procurement teams, and small business owners use it to eliminate both the excess cost of over-ordering and the stockout risk of under-ordering.
Frequently Asked Questions
Sobre Esta Calculadora
The Economic Order Quantity model, developed by Ford W. Harris in 1913, solves a classic trade-off in inventory management: ordering large quantities reduces per-order costs but increases storage costs; ordering small quantities does the opposite. The EOQ is the mathematically optimal point where total costs are minimised.
The formula requires three inputs: annual demand (units sold per year), the fixed cost of placing one order (administrative, shipping, and receiving costs), and the annual holding cost per unit (storage, insurance, capital tied up, and obsolescence risk). The square root relationship means that doubling demand increases the optimal order size by only about 40%, not 100%.
The calculator also computes your reorder point based on supplier lead time, so you know exactly when to place the next order to avoid stockouts.
Minimize custos descobrindo exatamente qual a quantia ideal das encomendas que deve pedir com o modelo Wilson.
Fórmula
EOQ = √(2 × Demand × Order Cost / Holding Cost per Unit)
Exemplo Resolvido
Finding the EOQ for a product with 1,200 units annual demand
Entradas:
- Annual demand: 1,200 units
- Order cost (per order): $35
- Annual holding cost per unit: $4
Passo a Passo:
- EOQ = √(2 × D × S / H)
- EOQ = √(2 × 1,200 × 35 / 4)
- EOQ = √(84,000 / 4)
- EOQ = √21,000 = 144.9 ≈ 145 units per order
- Number of orders per year: 1,200 ÷ 145 = 8.3 orders
- Reorder point (assuming 7-day lead time): (1,200 ÷ 365) × 7 = 23 units