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

Wire Gauge & Ampacity Calculator

Determine the minimum wire cross-sectional area (in mm²) needed to safely carry a given current over a set distance without exceeding your allowed voltage drop. Essential for wiring solar systems, EV chargers, and long cable runs.

Current Load (A)

Wire Run Distance (ft)

System Voltage

Max Voltage Drop

Wire Material

Fill in the required fields to see your result.

Electrical

Capacitor Charge Time Calculator

Calculates how long a capacitor takes to charge fully through a resistor, using the RC time constant. A capacitor is considered effectively fully charged after five time constants (5 × R × C).

Resistance (Ω)

Capacitance (µF)

Fill in the required fields to see your result.

Key differences

	Wire Gauge & Ampacity Calculator	Capacitor Charge Time Calculator
Category	Electrical	Electrical
Inputs required	5	2
Result	Minimum Wire Cross-Section (mm²)	Full Charge Time (seconds)
What it does	Determine the minimum wire cross-sectional area (in mm²) needed to safely carry a given current over a set distance without exceeding your allowed voltage drop. Essential for wiring solar systems, EV chargers, and long cable runs.	Calculates how long a capacitor takes to charge fully through a resistor, using the RC time constant. A capacitor is considered effectively fully charged after five time constants (5 × R × C).