Schedule variance (SV = EV - PV) API

Compute schedule variance SV = EV - PV with percent variance, SPI = EV/PV, and an ahead/behind/on-schedule rating — the focused PMBOK schedule-performance signal. Answers 'what is my schedule variance','am I ahead or behind schedule','what is the SPI from EV and PV'.

Price$0.01per request

MethodPOST

Route/v1/calc/pm-schedule-variance

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

calcpmschedule-varianceevmspischedulevarianceproject

API URLhttps://x402.hexl.dev/v1/calc/pm-schedule-variance

Integration docs

Example request

{
  "earnedValue": 800,
  "plannedValue": 1000
}

Example response

{
  "earnedValue": 800,
  "plannedValue": 1000,
  "scheduleVariance": -200,
  "scheduleVariancePct": -20,
  "spi": 0.8,
  "rating": "behind-schedule",
  "formula": "SV = EV - PV"
}

Input schema

{
  "type": "object",
  "required": [
    "earnedValue",
    "plannedValue"
  ],
  "properties": {
    "earnedValue": {
      "type": "number",
      "description": "EV, budgeted cost of work performed",
      "examples": [
        800
      ]
    },
    "plannedValue": {
      "type": "number",
      "description": "PV, budgeted cost of work scheduled",
      "examples": [
        1000
      ]
    }
  }
}

Output schema

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