Inverter Sizing Calculator

Determine the right inverter size for your continuous and surge loads.

Sum of all loads running simultaneously
Motors require 3-7x startup surge

Standard Inverter Sizes

Size Continuous Surge (2x) Typical Use
1,000W1,000W2,000WSmall loads
2,000W2,000W4,000WBasic backup
3,000W3,000W6,000WSmall home
5,000W5,000W10,000WMedium home
8,000W8,000W16,000WLarge home
10,000W10,000W20,000WWhole house

Inverter Types

Pure Sine Wave

Best for all equipment. Required for sensitive electronics, motors, and medical equipment. Higher efficiency.

Modified Sine Wave

Lower cost option. Suitable for basic resistive loads. May cause buzzing in motors and not work with some electronics.