Slow roast pork Cooking Time Calculator — Time, Temperature & Method

Slow roast pork Cooking Time Chart

Weight	Cooking time	Internal temp
3.5 lb	3 hr 41 min	190°F
4.5 lb	4 hr 35 min	190°F
5.5 lb	5 hr 29 min	190°F
6.5 lb	6 hr 24 min	190°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	54 min/lb (range 55–70/500 g)	US roasting guides
Internal target	190°F / 88°C	USDA / thermometer
Base offset	30 min	Standard
Oven	430°F sear for 25 min, then 300°F	Method
Resting	20 min	Best practice

— Slow roast pork 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.