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Slow cooker conversion

Convert a slow-cooker time between the high and low heat settings.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

hours
Results update as you type. The formula and assumptions are explained below the calculator.

Converted cooking time

8 hours

Original setting4 hours on high
Low-setting equivalent8 hours
High-setting equivalent4 hours
ChangeLonger, gentler cook

Approximate only. Slow cookers vary in wattage, size and heat distribution. Root vegetables and large cuts need the longer end of the range; keep the lid on and follow food-safety guidance.

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What does this tool do?

Slow-cooker settings are not precise temperatures, but the low setting typically takes about twice as long as high to reach a similar result. This converter keeps the total heat exposure roughly constant when you switch settings.

The Formula

Low time ≈ high time × 2; high time ≈ low time ÷ 2

Frequently Asked Questions

Is low always twice as long as high?

It is a practical rule of thumb, not a guarantee. Low usually runs around 90 °C and high around 100 °C, so the ratio can range from about 1.5 to 2.5 depending on the appliance and how full it is.

Can I convert a conventional oven recipe?

This tool only compares slow-cooker settings. Conventional oven recipes need a different conversion that accounts for moisture, pan size and the much higher temperature.