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Watts to Milliwatts

Convert watts (W) to milliwatts (mW). Live results, batch values, CSV export, formula and examples. Free, no sign-up.

Convert Power

High precision instant conversion on your device

Calculations run 100% locally on your browser. Zero data upload.

Results

1 values converted

rowinputfromresulttoerror
11W1000mW—

Mechanical horsepower is 550 foot-pounds-force per second; metric horsepower uses 75 kilogram-force meters per second.

Raw response payload
[
  {
    "row": 1,
    "input": 1,
    "from": "W",
    "result": "1000",
    "to": "mW"
  }
]

How to convert watts to milliwatts

Enter one value or paste one value per line. Change precision, swap units, then copy or export the results. Invalid values are reported individually.

Conversion Formula

result = (value × 1 + 0 − 0) ÷ 0.001

Mechanical horsepower is 550 foot-pounds-force per second; metric horsepower uses 75 kilogram-force meters per second.

Conversion examples
Watts (W)Milliwatts (mW)
00
11000
1010000
100100000

Reference: NIST unit conversion factors. Decimal and binary storage prefixes are distinct; rounded display values do not change the underlying calculation.

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