onlinecalculator.me

Free online cooking time calculator

A cooking time calculator estimates how long to roast or bake a given food based on its weight and desired doneness. It shows the recommended oven temperature, resting notes, and.

About this calculator

How to use

  1. Select the food type from the dropdown.
  2. Enter the weight in pounds (for meats and fish).
  3. Choose your cooking method: oven, grill, or slow cooker.
  4. Select the desired doneness for meats.
  5. Click Calculate and read the cooking time and temperature.

Formulas

For weight-based foods:

cooking time (min) = minutes per pound × weight (lbs)

Flat-time foods (casserole, bread, cookies, cake) use a fixed range regardless of weight.

Slow cooker multiplier: approximately 2× oven time.
Grill adjustment: approximately 0.9× oven time (10% faster for meats).

Worked example

4 lb whole chicken in the oven:

time = 20 min/lb × 4 lb = 80 min (1:20)
temperature = 375°F
servings ≈ 4 × 2 = 8

12 lb turkey:

time = 15 min/lb × 12 lb = 180 min (3:00)
temperature = 325°F

Notes

  • Always verify doneness with a meat thermometer. Cooking times are estimates — oven calibration, starting temperature, and pan type all affect the result.
  • Rest large roasts and whole poultry before carving. This lets internal juices redistribute.
  • Stuffed poultry takes longer than unstuffed because the stuffing must also reach a safe temperature.

Frequently asked

How long do I cook a whole chicken per pound?
A whole chicken roasts at 375°F for about 20 minutes per pound. A 4-pound bird takes roughly 80 minutes. Always verify with a meat thermometer — the thigh should reach 165°F.
How long does a turkey take to cook?
An unstuffed turkey roasts at 325°F for approximately 15 minutes per pound. A 12-pound bird takes about 3 hours. Add 5 minutes per pound for a stuffed turkey. Internal temperature must reach 165°F in the thigh.
How do I know when beef roast is done?
Use a meat thermometer: rare = 125°F, medium-rare = 135°F, medium = 145°F, well-done = 160°F. Rest the roast 15–20 minutes before carving so juices redistribute.
Why does slow cooker take twice as long?
Slow cookers run at much lower temperatures (around 190–210°F on low) compared to a 325–375°F oven. The extended time allows collagen in tougher cuts to break down into gelatin, which makes meat tender.
How are servings estimated?
The calculator uses 0.5 lb of meat per serving as a rough guide. Bone-in cuts have less usable meat, so plan for 0.75–1 lb per person for bone-in roasts.
How do I share my cooking time result?
Click Share to copy the page link, or Share with my numbers to include your food type and weight in the URL.