1.5 US teaspoons is 1/4 fluid ounce.
That is 15 tsp of water.
There are 5.07 fluid ounces in 15 centiliters.
There are 0.46875 (15/32) quarts in 15 fluid ounces. (US)1 quart = 32 fluid ounces
15 mL = 0.51 US fluid ounces.
15 ml = 0.51 US fluid ounces.
15 mL is about 0.507 US fluid ounces.
440ml is about 15 fluid ounces.
15 US fluid ounces = 443.6 mL
To convert fluid ounces to milliliters (mL) multiply fluid ounces by 29.57: 15 x 29.57 = 443.55 mL
15 ml = 0.51 US fluid ounces.
15 mL is about 0.507 US fluid ounces.
That is 12.6 teaspoons.