What Size Inverter Should You Buy? (Plus, How to Convert Amps to Watts)
We offer a wide range of power inverters across several brands. For detailed specifications on each model, visit our Inverters Page.
Quick Answer: The size of the inverter you need depends on the wattage (or amperage) of the devices you plan to power. You can find the power consumption details on the specification plate of your appliance or tool. We recommend choosing an inverter 10% to 20% larger than your highest power requirement to ensure reliable performance.
Important Note: These recommendations apply to inverters that use a single cable set (one positive and one negative cable) and may not be accurate for all inverters or applications. Some inverters require multiple cable sets, which may necessitate different cable sizes. Always consult the owner’s manual for the inverter you purchase before selecting the appropriate wiring.
Keeping cable lengths under 10 feet is generally recommended for optimal performance, with shorter lengths preferable. Extend on the AC side if you need additional length (e.g., using an extension cord from the inverter to the appliance) rather than on the DC side.
