Cooking Time Scaler
Estimate adjusted cooking time when changing the weight of a roast or baked dish.
lb
min
lb
Estimated New Time
180 min
Minutes Per Pound30.0 min/lb
New Time (hours)3.00 hours
How to Scale Cooking Time
Formula
Minutes Per Pound = Original Time / Original Weight
New Time = Minutes Per Pound x New Weight
This provides a linear estimate. For very large roasts, cooking time per pound may decrease slightly because the oven maintains a constant temperature.
Important
Always use a meat thermometer. Time estimates are guidelines; internal temperature is the definitive measure of doneness.
Example Calculation
A 4 lb roast takes 120 minutes. How long for a 6 lb roast?
- 01Minutes per pound: 120 / 4 = 30 min/lb.
- 02New time: 30 x 6 = 180 minutes (3 hours).
- 03Use a meat thermometer to verify doneness.
Frequently Asked Questions
Learn More
Recipe Scaling Guide - How to Double, Halve, or Adjust Any Recipe
Learn how to scale recipes up or down accurately. Covers multiplying ingredients, adjusting cooking times and temperatures, and avoiding common scaling mistakes.