Slow Cooker Conversion Calculator (Oven to Slow Cooker)
This slow cooker conversion calculator turns an oven or stovetop recipe into slow-cooker times on LOW or HIGH. Enter your original cooking time below, and use less liquid than the recipe states – slow cookers barely evaporate.
In summary: As a guide: 15-30 min in the oven = 4-6 hours on LOW (or 1.5-2 hours on HIGH); 30-45 min = 6-8 hours LOW; 45 min-3 hours = 8-10 hours LOW. And 1 hour on HIGH is about 2 hours on LOW.
Oven to slow cooker conversion chart
| Oven / stovetop | Slow cooker LOW | Slow cooker HIGH |
|---|---|---|
| 15-30 minutes | 4-6 hours | 1.5-2 hours |
| 30-45 minutes | 6-8 hours | 3-4 hours |
| 45 minutes – 3 hours | 8-10 hours | 4-6 hours |
Slow cooker tips
- Cut the liquid by about a third – there is no evaporation.
- Do not lift the lid – each peek adds 15-20 minutes.
- Add dairy and fresh herbs near the end.
- Instant Pot / pressure cooker is much faster and is not a direct time conversion.
Cooking in the oven or air fryer instead? Use our Oven to Air Fryer converter or the Oven Temperature converter.
More at slow cooker.
Frequently asked questions
How do I convert oven time to slow cooker time? As a guide, 30-45 minutes in the oven equals 6-8 hours on LOW or 3-4 hours on HIGH.
What is 1 hour on HIGH in slow cooker LOW? About 2 hours on LOW – LOW takes roughly double the time of HIGH.
Should I reduce the liquid in a slow cooker? Yes, cut it by about a third because slow cookers barely evaporate.