Car Audio Tools
Car Audio Tools
Electrical & Power Tools
Wire Gauge Calculator
Current (Amps)
Length (Feet)
Max Voltage Drop (%)
System Voltage
12V
14.4V (Charging)
Calculate
Voltage Drop Calculator
Wire Gauge (AWG)
4/0 AWG (107.2 mm²)
3/0 AWG (85.0 mm²)
2/0 AWG (67.4 mm²)
1/0 AWG (53.5 mm²)
1 AWG (42.4 mm²)
2 AWG (33.6 mm²)
4 AWG (21.1 mm²)
6 AWG (13.3 mm²)
8 AWG (8.37 mm²)
10 AWG (5.26 mm²)
12 AWG (3.31 mm²)
14 AWG (2.08 mm²)
16 AWG (1.31 mm²)
Current (Amps)
Length (Feet)
System Voltage
12V
14.4V (Charging)
Calculate
Wire Size:
Voltage Drop:
Percentage:
Wire Fuse Rating Calculator
Wire Gauge (AWG)
4/0 AWG (107.2 mm²)
3/0 AWG (85.0 mm²)
2/0 AWG (67.4 mm²)
1/0 AWG (53.5 mm²)
1 AWG (42.4 mm²)
2 AWG (33.6 mm²)
4 AWG (21.1 mm²)
6 AWG (13.3 mm²)
8 AWG (8.37 mm²)
10 AWG (5.26 mm²)
12 AWG (3.31 mm²)
14 AWG (2.08 mm²)
16 AWG (1.31 mm²)
Installation Type
Chassis/Free Air
Wire Bundle/Conduit
Bundled wires have lower ampacity due to heat buildup
Calculate
Wire Ampacity:
Maximum Fuse:
Recommended:
Amp Power Draw Calculator
Total RMS Power (Watts)
System Voltage
12V
14.4V (Charging)
Amplifier Efficiency (%)
Typical: Class AB (50-60%), Class D (65-75%)
Calculate
Current Draw:
Recommended Wire:
AWG ↔ mm² Converter
AWG Gauge
Select AWG...
4/0 AWG (107.2 mm²)
3/0 AWG (85.0 mm²)
2/0 AWG (67.4 mm²)
1/0 AWG (53.5 mm²)
1 AWG (42.4 mm²)
2 AWG (33.6 mm²)
4 AWG (21.1 mm²)
6 AWG (13.3 mm²)
8 AWG (8.37 mm²)
10 AWG (5.26 mm²)
12 AWG (3.31 mm²)
14 AWG (2.08 mm²)
16 AWG (1.31 mm²)
18 AWG (0.823 mm²)
OR
mm² Size
Convert
Speaker Impedance Tools
Ohm's Law Calculator
Voltage (V)
Current (A)
Resistance (Ω)
Power (W)
Enter any 2 values to calculate the rest
Calculate
Speaker Wiring Grid Calculator
Parallel Branches (Horizontal)
Each column = parallel branch
Speakers per Branch (Vertical/Series)
Each row = series connection
Speaker Impedance (Ω)
1Ω
2Ω
4Ω
8Ω
16Ω
Calculate
Total Impedance:
Total Speakers:
Speaker Output Calculator
SPL Calculator
Speaker Sensitivity (dB @ 1W/1m)
Typical: Speakers (85-92dB), Subs (82-88dB)
Power per Speaker (Watts RMS)
Number of Speakers/Subs
+3dB for each doubling (1→2→4→8)
Listening Distance (meters)
1m = reference, car interior ~0.5-1m
Calculate SPL