{
  "id": "watts-to-amps",
  "version": "09b928fb8ce4",
  "status": "published",
  "name": "Watts to Amps Converter",
  "question": "How do I convert watts to amps?",
  "summary": "Converts watts to amps and back: amps = watts ÷ volts.",
  "category": "convert",
  "subcategory": "units",
  "url": "https://www.acalculator.org/convert/watts-to-amps",
  "markdown": "https://www.acalculator.org/convert/watts-to-amps.md",
  "kind": "formulas",
  "method": "amps = watts ÷ volts",
  "assumptions": [
    "Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up."
  ],
  "inputs": {
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "type": "object",
    "properties": {
      "value": {
        "title": "Watts (W)",
        "description": "The amount in watts.",
        "type": "number",
        "minimum": 0,
        "maximum": 1000000000000
      },
      "volts": {
        "title": "Voltage (V)",
        "description": "120 V for a US outlet, 230 V in Europe.",
        "type": "number",
        "minimum": 0.01,
        "maximum": 100000
      },
      "result": {
        "title": "Amps (A)",
        "description": "The same amount in amps.",
        "type": "number",
        "minimum": 0,
        "maximum": 10000000
      }
    }
  },
  "solve": {
    "fillAny": 2,
    "variables": [
      "value",
      "volts",
      "result"
    ],
    "inputsOnly": []
  },
  "outputs": {
    "value": {
      "label": "Watts (W)",
      "description": "The amount in watts.",
      "format": "number"
    },
    "volts": {
      "label": "Voltage (V)",
      "description": "120 V for a US outlet, 230 V in Europe.",
      "format": "number"
    },
    "result": {
      "label": "Amps (A)",
      "description": "The amount in amps.",
      "format": "number"
    }
  },
  "defaultAnswer": {
    "inputs": {
      "value": 1,
      "volts": 120
    },
    "outputs": {
      "result": 0.008333333333333333
    },
    "text": "1 watts = 0.008333 amps."
  },
  "examples": [
    {
      "given": {
        "value": 1200,
        "volts": 120
      },
      "expect": {
        "result": 10
      },
      "source": "NIST SP 811 (2008), Table 3: W = V × A"
    },
    {
      "given": {
        "value": 60,
        "volts": 12
      },
      "expect": {
        "result": 5
      },
      "source": "NIST SP 811 (2008), Table 3: W = V × A"
    }
  ],
  "sources": [
    "NIST SP 811 (2008), Guide for the Use of the International System of Units, Table 3 (watt = volt × ampere) and Appendix B.8, retrieved 2026-10-01. https://www.nist.gov/pml/special-publication-811"
  ],
  "related": [
    "ohms-law",
    "power",
    "voltage-drop"
  ],
  "changelog": []
}