Engineering Category Hub

Amps to Watts Target Sizing Lookups (12 Tools)

Target amperage to wattage ratings from 0.5A to 200A. Determine electrical capacity across standard residential and industrial voltages.

Primary Governing Equation
P = V × I × PF | Three-Phase: P = √3 × V × I × PF

Available Calculators (12 Tools)

← View All 100 Tools
Amps-to-Watts Extended

0.5 Amps to Watts Calculator

USB port output, microcontroller sensor loops, LED bulb current draw.

W = 0.5 × V Open →
Amps-to-Watts Extended

2 Amps to Watts Calculator

USB charging adapters, small 12V exhaust fans, CCTV security systems.

W = 2 × V Open →
Amps-to-Watts Extended

3 Amps to Watts Calculator

Laptop USB-C Power Delivery, automotive auxiliary sockets, stereo receivers.

W = 3 × V Open →
Amps-to-Watts Extended

8 Amps to Watts Calculator

Level 1 EVSE low charging mode, small handheld power tools.

W = 8 × V Open →
Amps-to-Watts Extended

12 Amps to Watts Calculator

Continuous appliance threshold, Level 1 standard EV charging cords.

W = 12 × 120V = 1440 Watts (Official 80% continuous limit of a 15A breaker) Open →
Amps-to-Watts Extended

16 Amps to Watts Calculator

Level 2 16A portable EV chargers (NEMA 6-20 outlet), large air compressors.

W = 16 × 120V = 1920W Open →
Amps-to-Watts Extended

25 Amps to Watts Calculator

Commercial food equipment, heavy RV 30A continuous loads.

W = 25 × V (12V = 300W, 120V = 3000W, 240V = 6000W) Open →
Amps-to-Watts Extended

32 Amps to Watts Calculator

Tesla Mobile Connector, 32A Level 2 home EV charging stations.

W = 32 × 240V = 7680 Watts (7.68 kW) Open →
Amps-to-Watts Extended

48 Amps to Watts Calculator

Tesla Wall Connector, ChargePoint Home Flex 48A hardwired EV chargers.

W = 48 × 240V = 11520 Watts (11.52 kW) Open →
Amps-to-Watts Extended

70 Amps to Watts Calculator

Heavy garage sub-panels, dual-engine marine shore power.

W = 70 × 240V = 16800 Watts (16.8 kW) Open →
Amps-to-Watts Extended

80 Amps to Watts Calculator

Ford Charge Station Pro (F-150 Lightning bi-directional power), 100A sub-panel continuous capacity.

W = 80 × 240V = 19200 Watts (19.2 kW) Open →
Amps-to-Watts Extended

200 Amps to Watts Calculator

Whole-house load calculations for heat pump additions, solar interconnection sizing.

W = 200 × 240V = 48000 Watts (48.0 kW) Open →