Oven, Air Fryer & Slow Cooker Converter
Convert cooking times and temperatures between conventional oven, fan oven, air fryer, halogen oven and slow cooker Low/High settings.
Frequently asked questions
Is this tool free?
Yes. Calchemy tools are free to use in your browser.
Is my data uploaded?
No. The tools are designed to run locally in your browser unless clearly stated otherwise.
How accurate is this?
It uses commonly published approximate conversion guides, not an exact formula. Always check food is thoroughly cooked (piping hot throughout, and use a meat thermometer for meat) before serving, and adjust for your own appliance.
How are air fryer and halogen oven conversions worked out?
Both are treated as forced-convection appliances, similar to a fan oven: temperature is reduced by about 20C compared with a conventional oven, and time is reduced (around 25% less for an air fryer, around 30% less for a halogen oven) since they cook faster.
What if my oven time doesn't fit a slow cooker band exactly?
It's matched to the nearest published band. For times right on a boundary, either neighbouring band is a reasonable estimate.