Ans

Unit converter

Watts to BTU per hour.

Convert W to BTU/h and BTU/h to W. Type in either box and the other follows. Air conditioners and heat pumps are sold in BTU per hour and specified in watts. One watt is 3.41 BTU/h.

W → BTU/hExact definition
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Watts to BTU per hour — common values, to 6 significant figures.
WBTU/h
100 W341.214 BTU/h
250 W853.035 BTU/h
500 W1706.07 BTU/h
1000 W3412.14 BTU/h
1500 W5118.21 BTU/h
2000 W6824.28 BTU/h
2500 W8530.35 BTU/h
3500 W11942.5 BTU/h
5000 W17060.7 BTU/h
7000 W23885 BTU/h
1 W=3.412141633 BTU/h 1 BTU/h=0.2930710702 W

Definitions

  • The watt is the SI unit of power: one joule per second.
  • BTU per hour rates heating and cooling equipment. A 12 000 BTU/h air conditioner is one "ton" of refrigeration, about 3.5 kW.
  • This conversion is exact by definition. 1 W = 3.412141633 BTU/h.
  • Power is converted through W.

How it works

One direction multiplies and the other divides by the same number, so nothing is lost by going back and forth.

The value passes through W, the unit every other power unit on the site is defined against, rather than a number written into this page on its own. That is why the figure here, the figure in the table above and the general power converter always agree.

Display precision limits significant figures rather than decimal places, because one fixed number of decimals is useless across a range this wide. Very large and very small results switch to scientific notation with a proper superscript exponent. The editable box always holds a plain number at full working precision, so you can carry on from either side.

Common questions this answers: how many BTU per hour in a watt (3.41214), how many watts in a btu per hour (0.293071), and what 3500 W is in BTU per hour (11942.5 BTU/h).

From the maker of Ans — a scientific calculator you can own. Same idea: a proper instrument, nothing in the way.