Slow Cooker to Oven Conversion Calculator

Slow cookers and conventional ovens work very differently. A slow cooker uses low, moist heat over a long stretch, and its lid traps the steam, which keeps food tender and stops it drying out.
An oven uses dry circulating heat that evaporates moisture instead. That is what browns a surface, and it is also why the same dish needs far less time in there.

The conversion principle: The relationship is not linear. Slow cooking at Low (around 90°C / 190°F) for 8 hours comes out roughly equivalent to 1.5 to 2 hours in a 150°C / 300°F oven. The oven runs hotter to make up for the much shorter time and for the fact that nothing is holding the moisture in.

The oven temperatures below are the settings an oven dial actually has. Converting 150°C arithmetically lands on 302°F, which is not a number you can set, so each row gives the paired dial marking instead.

Standard conversion guide:

Important considerations:

1. Liquid reduction: Slow cooker recipes often contain more liquid because the lid retains moisture. When converting to oven cooking, reduce liquid by about 25–30% to avoid watery results.

2. Browning: Ovens can brown and caramelize the surface of meat; slow cookers cannot. For best results, sear meat in a pan before oven cooking or broil for 5 minutes at the end.

3. Dense vegetables: Root vegetables like carrots and potatoes take longer in an oven. Cut them smaller than usual for oven conversions.

4. Dairy and pasta: Add these in the last 30 minutes of oven cooking, just as you would in the last 30–60 minutes in a slow cooker.

5. Altitude adjustments: Above about 3,500 ft (1,070 m), raise the oven temperature and start checking earlier. The bump is +15°F up to 5,000 ft and +25°F beyond that, and the cooking altitude adjustment calculator has the full set of changes, including what to do to the liquid.

Reverse conversion (oven to slow cooker): Going the other way is not a single multiplier, which is why a flat “3 to 4 times” is bad advice. The stretch is largest for short recipes and smallest for long ones.
A quarter hour in the oven becomes about 4 hours on Low, which is a sixteenfold jump. Half an hour becomes 5 to 6 hours, closer to twelvefold. Four hours becomes 11 to 12, and by then you are down to about 3x. The slow cooker time converter walks that curve properly rather than stepping between bands, so it will give you a figure for any time in between.