By Bill Ohaire | Published: April 2026 | Last Updated: April 2026

Golden grilled chicken on the barbecue

Photo by Valeria Boltneva on Pexels

Quick Answer

4cm Chicken Breast: Grill at 190°C (375°F) indirect for 8-10 min/side per side (cooked).

4cm Chicken Breast Cook Times

Very thick breast — likely the thickest part of an unpounded breast. Use indirect heat to avoid burning the outside while the centre cooks through.

DonenessTime Per Side
Fully Cooked8-10 min/side

Grill temperature: 190°C (375°F) indirect

Why Thickness Matters More Than Weight

Thickness is the single most important factor in determining cook time on the BBQ. A flat 300g steak that's 1cm thick cooks in 4 minutes total. A 300g steak that's 4cm thick needs 12+ minutes. Same weight, completely different cook times.

Heat travels from the surface inward. The thicker the cut, the longer it takes for the centre to reach your target temperature. This is why a meat thermometer is essential — time is just a guide.

Tips for 4cm Chicken Breast

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Frequently Asked Questions

How long to cook a 4cm chicken breast?

A 4cm thick chicken breast takes approximately 8-10 min/side per side for cooked at 190°C (375°F) indirect. Always use a meat thermometer to confirm doneness.

What temperature should I grill a 4cm chicken breast?

Grill a 4cm chicken breast at 190°C (375°F) indirect. Very thick breast — likely the thickest part of an unpounded breast.

Does thickness affect cook time more than weight?

Yes. Thickness is the primary factor in determining cook time on the BBQ. Heat travels from the surface inward, so a thicker cut takes proportionally longer to cook through regardless of its total weight.

Should I use direct or indirect heat for 4cm chicken breast?

For 4cm thick cuts, use a combination: sear over direct heat for 2-3 minutes per side, then finish over indirect heat until the internal temperature reaches your target.

Related BBQ Guides

Sources & References

1
Guga Foods (YouTube)
Creative chicken grilling experiments and flavour tests.
Video
2
Weber Grill Skills
Step-by-step poultry grilling guides from Weber Australia.
Manufacturer
3
Food Standards Australia New Zealand
Official safe minimum cooking temperatures for poultry in Australia.
Government
4
America's Test Kitchen (YouTube)
Rigorously tested cooking methods for perfectly cooked poultry.
Video