Why can't I just divide slow cooker time by a fixed ratio to get pressure cooker time?

Pressure cooking uses sealed high-pressure steam, which cooks through a fundamentally different mechanism than the slow, low-heat method of a slow cooker, so conversion depends on the specific dish rather than a single universal ratio.

Should I use the same amount of liquid when converting a recipe to a pressure cooker?

Usually less. Pressure cookers lose far less liquid to evaporation than slow cookers or ovens over a long cook time, so recipes converted from those methods often need less added liquid.

What's the difference between natural and quick pressure release?

Natural release lets pressure drop on its own over time, continuing to cook the food gently; quick release manually vents steam and stops cooking immediately, which matters for delicate ingredients that can overcook.

Instant Pot ↔ Slow Cooker Converter

Convert cooking times between Instant Pot pressure cooker, slow cooker, and oven.

Food Category

Slow Cooker Mode

Slow Cooker Time

hrs

Quick Reference Table

Food	Slow Cooker Low	Slow Cooker High	Instant Pot	Release
Dried Beans	8–10 hrs	5–6 hrs	25–30 min	Natural
Beef Chuck Roast	8–10 hrs	4–5 hrs	60–80 min	Natural 15 min
Beef Stew	8–10 hrs	4–6 hrs	35 min	Natural 10 min
Whole Chicken	6–8 hrs	3–4 hrs	25–30 min	Natural 15 min
Chicken Breasts	4–6 hrs	3–4 hrs	10–15 min	Natural 5 min
Chicken Thighs	6–8 hrs	3–4 hrs	15 min	Natural 5 min
Pork Shoulder	8–10 hrs	4–6 hrs	60–75 min	Natural 15 min
Pork Ribs	6–8 hrs	3–4 hrs	25–30 min	Quick
Vegetables (soft)	2–3 hrs	1–2 hrs	3–5 min	Quick
Vegetables (root)	4–6 hrs	2–3 hrs	8–12 min	Quick
White Rice	2–2.5 hrs	1–1.5 hrs	3 min	Natural 10 min
Brown Rice	3–4 hrs	2–3 hrs	22 min	Natural 10 min
Soup / Broth	6–8 hrs	3–4 hrs	20–30 min	Quick
Fish / Salmon	1–2 hrs	1 hr	3–5 min	Quick
Shrimp	1–1.5 hrs	45 min	1–2 min	Quick

How to use

Choose the conversion direction using the tabs at the top.
Select the food category and enter your original cooking time.
The converted time updates automatically as you type.
Pay attention to the recommended pressure release method — it affects texture.
Natural release means letting pressure drop on its own; quick release uses the valve.
Use the reference table below for quick lookups on common foods.
Times are estimates — always check food is fully cooked before serving.

About this Instant Pot Converter

Converting a slow cooker or oven recipe to pressure cooker timing isn't a simple ratio, because pressure cooking works fundamentally differently — sealed steam at high pressure raises the boiling point of water and cooks food far faster than atmospheric-pressure methods.

Rough conversion guidelines

Slow cooker high (4 hours) → pressure cook: roughly 20–25 minutes at high pressure for many stews and braises
Slow cooker low (8 hours) → pressure cook: roughly 25–35 minutes for similar dishes
Oven-braised dishes (2–3 hours at 325°F) → pressure cook: often 30–45 minutes depending on the cut and size of the ingredients

These are starting points, not guarantees — the right time still depends on ingredient density, liquid amount, and how the food is cut.

Adjusting liquid amounts

Pressure cookers need a minimum liquid amount to build and maintain pressure, but lose far less liquid to evaporation than a slow cooker or oven does over a long cook time. Recipes converted from those methods usually need less added liquid than the original called for, or the final dish will be noticeably thinner than intended.

Natural vs. quick release

Natural pressure release (letting pressure drop on its own, which can take 10–20+ minutes) continues cooking the food gently during that time and is gentler on delicate proteins. Quick release (manually venting the steam) stops cooking immediately, which matters for dishes that can easily overcook, like vegetables.