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Extension Cord Gauge Calculator
Wire gauge.
🧮 Free Online Tool
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📊 Clear Breakdown
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Extension
Work It Out And Get Clear Answers
Wire gauge.
Extension Cord Gauge Estimator
Enter your numbers below for an instant estimate.
0
Copper wire.
💡 Tip: Copper wire.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Press Calculate to see the result.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Extension Cord Gauge Quick Guide
Typical values for reference.
| Current (A) | Length (m) | Allowed drop (V) | Min area |
|---|---|---|---|
| 13 | 20 | 5 | 1.79 mm² |
| 6.5 | 20 | 5 | 0.8944 mm² |
| 26 | 20 | 5 | 3.58 mm² |
| 13 | 10 | 5 | 0.8944 mm² |
| 13 | 40 | 5 | 3.58 mm² |
| Rule of thumb: check your inputs, use the result as a guide and round sensibly. | |||
Common Questions
Extension Cord Gauge FAQ
Answers to common questions about this calculator.
Copper wire.
It uses the default inputs shown and the formula described above. Change any value and press Calculate to see how the result moves.
It is an estimate based on the inputs you enter. Check real quotes, labels, product data or official guidance for important decisions.
Yes. Replace each input with your own figures and press Calculate to update the result.