Days of inventory (DIO) calculator API

Compute days inventory outstanding DIO = (averageInventory / COGS)·periodDays and inventory turns, with a lean/healthy/elevated/excess rating — the working-capital efficiency metric. Answers 'how many days of inventory do I hold','days inventory outstanding','inventory turns per year'.

Price$0.01per request

MethodPOST

Route/v1/calc/logi-days-of-inventory

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

calclogisticsinventorydiodays-of-inventoryturnsworking-capitalkpi

API URLhttps://x402.hexl.dev/v1/calc/logi-days-of-inventory

Integration docs

Example request

{
  "averageInventoryValue": 250000,
  "annualCOGS": 3000000
}

Example response

{
  "formula": "DIO = (averageInventory / COGS) · periodDays ; inventoryTurns = periodDays / DIO",
  "daysOfInventory": 30.42,
  "inventoryTurns": 12,
  "rating": "healthy",
  "inputs": {
    "averageInventoryValue": 250000,
    "annualCOGS": 3000000,
    "periodDays": 365
  }
}

Input schema

{
  "type": "object",
  "required": [
    "averageInventoryValue",
    "annualCOGS"
  ],
  "properties": {
    "averageInventoryValue": {
      "type": "number",
      "description": "average inventory value (currency)",
      "examples": [
        250000
      ]
    },
    "annualCOGS": {
      "type": "number",
      "description": "annual cost of goods sold",
      "examples": [
        3000000
      ]
    },
    "periodDays": {
      "type": "number",
      "description": "days in the period (default 365)",
      "examples": [
        365
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}