It often takes 2-15 minutes, depending on several factors like the bottle, the initial temperature, and the milk volume. And the warming time varies depending on your chosen model. For example, if you choose milk at room temperature, it usually takes about 3-4 minutes. Furthermore, frozen breast milk will take longer to thaw and warm evenly. It may take between 4-8 minutes for refrigerated milk or formula to hit the right temperature.
Here is a reference chart showing the warming time for Parents Choice bottle warmer (when the warmer volume is about 40ML / 1.4oz):
| Bottle |
Initial Temp |
Milk Volume |
| 60ml / 2oz |
120ml / 4oz |
180ml / 6oz |
240ml / 8oz |
| Plastic |
41 ℉ / 4 ℃ |
4 min |
5.5 min |
6 min |
7 min |
| 68 ℉ / 20 ℃ |
3 min |
3.5 min |
4.5 min |
5 min |
| Silicone |
41 ℉ / 4 ℃ |
5 min |
6 min |
7.5 min |
8.5 min |
| 68 ℉ / 20 ℃ |
4 min |
5 min |
5.5 min |
6 min |
| Glass |
41 ℉ / 4 ℃ |
3 min |
4 min |
5 min |
6 min |
| 68 ℉ / 20 ℃ |
2.5 min |
3 min |
4 min |
4.5 min |
| Milk bag |
41 ℉ / 4 ℃ |
2.5 min |
3.5 min |
4.5 min |
5 min |
| 68 ℉ / 20 ℃ |
2.5 min |
3 min |
3.5 min |
4.5 min |