Whole chicken Cooking Time Calculator — Time, Temperature & Method

Whole chicken Cooking Time Chart

Weight	Cooking time	Internal temp
3 lb	1 hr 14 min	165°F
4 lb	1 hr 33 min	165°F
5 lb	1 hr 51 min	165°F
6 lb	2 hr 9 min	165°F
7 lb	2 hr 27 min	165°F
8 lb	2 hr 45 min	165°F

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How This Calculator Works — Formula & Method

Source: standard US roasting guidance · applied deterministically · verify with a thermometer

Constant	Value	Source
Time per lb	18 min/lb (range 18–22/500 g)	US roasting guides
Internal target	165°F / 74°C	USDA / thermometer
Base offset	20 min	Standard
Oven	375°F	Method
Resting	15 min	Best practice

— Whole chicken cooking time —
total_min = min_per_500g × (weight_lb × 453.592 / 500) + base_offset
range = [lo_per_500g … hi_per_500g] × (weight / 500) + base_offset
conventional_oven = fan_temp + 10–20°C (same time)
celsius = derived table from °F
— algorithm —
lookup(meat, cut, doneness) → point_estimate → guidance_range
→ internal_target_temp → verify_with_thermometer()

Public roasting guidance applied deterministically — this is not a food-safety authority. Always cook to the stated internal temperature, measured with a meat thermometer.

Frequently Asked Questions

About 18 minutes per lb plus 20 minutes at 375°F, to 165°F internal. Roast at 180°C fan — 20 min per 500 g plus 20 min. Internal 74°C in the thickest part.

Cook at 375°F / 180°C. Internal target 165°F. Rest 15 minutes.