Convertidor de Calibre de Cable

AWG a diámetro y área de sección

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Quick Answer

AWG (American Wire Gauge) is a logarithmic scale where lower numbers = thicker wire. The formula d(mm) = 0.127 × 92^((36-AWG)/39) converts any gauge to diameter. Each 3 AWG steps doubles the cross-sectional area and halves the resistance.

Documentation

Calculadora de Calibre de Cable

Convierta entre AWG y mm2 metrico.

Design Notes

AWG is used throughout North America while IEC metric sizes (mm²) are standard in Europe and Asia. There is no exact 1:1 mapping between the systems. For current-carrying capacity, always consult your local electrical code (NEC in the US, IEC 60364 internationally) as ampacity depends on installation conditions.

Common Mistakes

  • 1

    Thinking higher AWG = thicker wire. It is the OPPOSITE: AWG 10 is much thicker than AWG 24.

  • 2

    Using the same ampacity rating for wire in conduit vs free air — bundled wires must be derated significantly.

  • 3

    Ignoring voltage drop for long wire runs — even if the wire can handle the current, the voltage drop may be excessive.

Engineering Handbox

1. d(inches) = 0.005 × 92^((36-12)/39) = 0.0808 in 2. d(mm) = 0.127 × 92^0.615 = 2.053 mm 3. Area = π/4 × 2.053² = 3.31 mm² 4. Ampacity (NEC): 20A in 60°C insulation

VerificationAWG 12: 2.05mm diameter, 3.31mm² area. Standard for US 20-amp household circuits.

Knowledge Base

¿Mayor AWG significa cable más grueso?

No. AWG es invertido. AWG 10 (2.59 mm) es mucho más grueso que AWG 24 (0.51 mm).

¿Cuál es la fórmula AWG a mm?

d(mm) = 0.127 × 92^((36-AWG)/39). Cada 3 AWG duplica el área de sección.

¿Qué AWG para 15A?

AWG 14 mínimo (NEC). 20A: AWG 12. 30A: AWG 10. Distancias largas requieren calibre mayor.

¿Cuál es el equivalente métrico?

AWG 10 ≈ 6mm², AWG 12 ≈ 4mm², AWG 14 ≈ 2.5mm², AWG 18 ≈ 1.0mm².

¿Diferencia entre cable sólido y trenzado?

Mismo AWG = misma área = misma resistencia. Trenzado es más flexible; sólido mantiene su forma.