One measure does not directly translate to another. A BTU is the amount of heat that it takes to raise the temp of one pound of water by one degree F. A burning match, and a burning fireplace may both be at 650 degrees, but the fireplace gives off more heat (more BTUs)
there is no conversion from temperature to BTU unless you know the mass and specific heat of a substance at a certain temperature. Then you could calculate the BTU required to heat the substance from a known starting temperature up to an ending temperature.
your question is 650 ft3 normal room (fan + lights+ computer) then it will be sufficient. subjected to there should not be major heat loss device.
prarie 650 over heat light not working
162 and a half
The EarthWatts can overheat, but under normal circumastances in a well-ventilated room, should be fine.
650 ÷ 10 = 65
650 billion of them.
75 is 11.54% of 650.
650 cm = 255.905"
650 kg is equal to 650,000 grams.
650 days = 56160000 seconds