Multiply the number of refrigeration tons by 3.517 to get the number of kilowatts. If you want to use only two decimal places, round up to 3.52. If you have 4 tons that you want to convert, 4 x 3.517 = 14.068 kW.
Convert the value to watts if needed by multiplying the kilowatt value by 1,000. If you have 14.068 kW, multiply by 1,000 to get 14,068 watts.
Divide by 3.517, or multiply by 0.2843, to go from kilowatts back to refrigeration tons. 75 kW would equal 21.32 refrigeration tons.