Measurement calculator that can be used to convert Milliwatt to BTU/s, among others: 1 Milliwatt [mW] = 0.000 000 947 817 120 313 32 BTU/s
Convert Milliwatt to BTU/s:Choose the right category from the selection list, in this case 'Power'. Next enter the value you want to convert. From the selection list, choose the unit that corresponds to the value you want to convert, in this case 'Milliwatt [mW]'. Finally choose the unit you want the value to be converted to, in this case 'BTU/s'.