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Both calculators run independently — change the inputs on either side to compare results.

Solar Wire Sizing Calculator

Determine the correct AWG wire gauge for any run in your solar array based on current, distance, voltage, and temperature. Use this before purchasing cable to avoid dangerous overheating or efficiency-robbing voltage drop.

Maximum Current (amps)

Wire Run Distance (feet)

System Voltage

Acceptable Voltage Drop

Operating Temperature (°C)

Fill in the required fields to see your result.

Solar Energy

Solar Battery Sizing Calculator

Find the minimum battery bank capacity needed to power your home through cloudy days or outages. Use this when designing an off-grid or hybrid solar system and choosing between lithium or lead-acid batteries.

Daily Energy Usage (kWh)

Backup Days Needed (days)

Battery Type

System Voltage

System Efficiency (%)

Fill in the required fields to see your result.

Key differences

	Solar Wire Sizing Calculator	Solar Battery Sizing Calculator
Category	Solar Energy	Solar Energy
Inputs required	5	5
Result	Minimum Wire Gauge (AWG)	Required Battery Capacity (Ah)
What it does	Determine the correct AWG wire gauge for any run in your solar array based on current, distance, voltage, and temperature. Use this before purchasing cable to avoid dangerous overheating or efficiency-robbing voltage drop.	Find the minimum battery bank capacity needed to power your home through cloudy days or outages. Use this when designing an off-grid or hybrid solar system and choosing between lithium or lead-acid batteries.