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Instant Pot / Pressure Cooker Time Converter

Convert a conventional recipe's cook time to electric pressure cooker time.

Result

Pressure Cook Time
27 min
Plus Natural Release
10-15 min (recommended for most recipes)

Pressure cooking typically cuts cook time to roughly 30% of a conventional simmer/braise/roast, since the higher internal pressure raises the boiling point of water above 212°F (100°C). Tough cuts of meat and dried beans benefit most; delicate items (fish, vegetables) need much shorter times than this estimate.

About the Instant Pot Converter

Pressure cooking finishes braises and stews in a fraction of the time a conventional pot takes, and the reason comes down to physics rather than a stronger flame: sealing the lid traps steam and raises internal pressure, which pushes water's boiling point well above the normal 212°F.

How It Works

Enter the cook time a recipe calls for on the stovetop or in the oven, and the calculator multiplies it by 0.3, reflecting the roughly 70% time reduction pressure cooking typically achieves for braises, stews, and tough cuts.

pressure cook minutes = conventional minutes × 0.3

Formula & Methodology

A sealed pressure cooker builds internal pressure as it heats, and higher pressure raises the temperature at which water boils, sometimes to around 250°F inside the pot instead of 212°F. Cooking food at that higher temperature speeds up the collagen breakdown and starch gelatinization that a long, slow braise relies on, so the same tenderizing effect that takes 90 minutes on the stovetop can happen in about 27 minutes under pressure.

Step-by-Step: Calculating It By Hand

  1. 1Start with the conventional recipe's total simmer, braise, or roast time in minutes.
  2. 2Multiply that number by 0.3 to estimate the pressure cook time.
  3. 3Add roughly 10-15 minutes for the pot to come up to pressure before the timer starts.
  4. 4Plan for a natural pressure release afterward, especially for tougher cuts, since the meat keeps tenderizing as the pot depressurizes.

Examples

A 90-minute beef stew

90 minutes of stovetop simmering converts to about 27 minutes of pressure cook time, plus time to come to pressure and a natural release afterward.

A quick 20-minute soup

A soup that only simmers 20 minutes on the stove converts to about 6 minutes under pressure, since it wasn't relying on long cook time to tenderize anything tough to begin with.

Advantages

  • Applies a single, well-established ratio instead of guessing at a new time from scratch
  • Flags that natural release time still needs to be planned for separately
  • Works for any conventional cook time, not just a fixed list of recipes

Common Mistakes

  • Applying the 30% conversion to delicate foods that were never going to need long cooking anyway
  • Forgetting to budget time for the pot to build pressure before the countdown begins
  • Skipping the natural release on tough cuts, which cuts short some of the tenderizing that happens as pressure drops

Edge Cases to Watch For

  • Delicate items like fish, leafy greens, or already-tender vegetables need far less than the 0.3 multiplier suggests and can turn to mush if pressure cooked for 30% of a conventional simmer time.
  • Dried beans and tough, collagen-rich cuts (short ribs, oxtail, chuck) benefit the most from this conversion and are where the time savings are most dramatic.
  • The 0.3 factor doesn't include the 10-15 minutes it takes the pot to build pressure, so total time in the kitchen is somewhat longer than the pressure cook number alone suggests.

Common Use Cases

  • Adapting a favorite braise or stew recipe for an electric pressure cooker
  • Estimating cook time for dried beans without soaking them overnight first
  • Planning a weeknight dinner around a pressure cooker's much shorter active cook time
Written & fact-checked by the Calculateus TeamLast updated August 5, 2026How we verify our formulas

Frequently asked questions

Why does pressure cooking work so much faster?

Sealing the pot raises internal pressure, which raises water's boiling point well above the normal 212°F (100°C) - cooking at that higher temperature speeds up the chemical reactions that break down tough connective tissue and cook food through, cutting typical braise/stew times to roughly a third.

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Conclusion

The 30% rule is a dependable starting point precisely because it's rooted in how pressure cooking actually works, not an arbitrary shortcut. It gets tough, long-cooking dishes into the right neighborhood almost instantly, while delicate ingredients still need their own judgment rather than a blanket multiplier.