https://www.metric-conversions.org/energy-and-power/newton-meters-to-kilotons-metric-explosive-energy.htm
Newton-meters to Kilotons (metric, explosive energy) (Nm to kt) conversion calculator for Energy and Power conversions with additional tables and formulas.
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https://www.metric-conversions.org/energy-and-power/newton-meters-to-btu-it-pre-1956.htm
Newton-meters to Btu (I.T., pre-1956) (Nm to Btu (I.T., pre-1956)) conversion calculator for Energy and Power conversions with additional tables and formulas.
newton metersbtupreconversion