Convert Milliwatts to Exawatts
Convert Milliwatts (mW) to Exawatts (EW) instantly and accurately.
Conversion Formula
EW = mW × 1.000000000e-21
About Milliwatts
A milliwatt (mW) is 10⁻³ W - the power scale of consumer wireless communications. Wi-Fi access points transmit at 100 mW (20 dBm); mobile phones peak at up to 1,000 mW. A laser pointer emits 1-5 mW; an LED indicator 10 mW; Bluetooth Classic peaks at 100 mW. Standby power implications: 1 mW × 10⁹ devices × 1 year = 8,760 MWh - enough to power a small town, underscoring why milliwatt standby matters at scale. 1 mW = 10⁻³ W.
About Exawatts
An exawatt (EW) is 10¹⁸ W. The Sun's total luminosity is 3.828 × 10²⁶ W = 3.828 × 10⁸ EW. Earth intercepts ~0.174 EW of solar power. Gamma-ray burst peak luminosities reach 10⁶-10¹ EW, making them the most powerful transients in the universe. Soft gamma-repeater (magnetar) giant flares briefly reach ~10⁵ EW. Proposed multi-exawatt laser projects (IZEST initiative) aim to compress kilojoules into attosecond pulses for QED vacuum physics. Global human civilisation consumes ~1.8 × 10⁻² EW (18 TW). 1 EW = 10¹⁸ W.
Quick Reference Table
| Milliwatts (mW) | Exawatts (EW) |
|---|---|
| 1 mW | 1 × 10-21 EW |
| 2 mW | 2 × 10-21 EW |
| 5 mW | 5 × 10-21 EW |
| 10 mW | 1 × 10-20 EW |
| 25 mW | 2.5 × 10-20 EW |
| 50 mW | 5 × 10-20 EW |
| 100 mW | 1 × 10-19 EW |