How many dekametre/hour in 1 mach? The answer is 122504.4. We assume you are converting between dekametre/hour and mach. You can view more details on each measurement unit: dekametre/hour or mach The SI derived unit for speed is the meter/second. 1 meter/second is equal to 360 dekametre/hour, or 0.002938669957977 mach. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between dekameters/hour and mach. Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from mach to dekametre/hour, or enter any two units below:
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