## Distance Speed Time Calculator

OK, I know this is physics and not pure math, but it's free and it might show handy. :-)

This calculator basically does something very simple - it calculates distance, speed (velocity) or time if you have the other two. #### Time from Distance and Speed

 Enter distance value and unit: Metres Millimetres Centimetres Kilometres Inches Feet Yards Fathoms Statute Miles Nautical Miles Light Year Enter speed value and units: Metres per Second Kilometre per Hour Feet per Second Feet per Minute Yard per Minute Statute Mile per Hour Knot
 Time is: Hours Minutes Seconds

#### Distance from Speed and Time

 Enter speed value and units: Metres per Second Kilometre per Hour Feet per Second Feet per Minute Yard per Minute Statute Mile per Hour Knot
 Enter time: Hours Minutes Seconds
 Distance is (select unit before calculating): Metres Millimetres Centimetres Kilometres Inches Feet Yards Fathoms Statute Miles Nautical Miles Light Year

#### Speed from Distance and Time

 Enter distance value and unit: Metres Millimetres Centimetres Kilometres Inches Feet Yards Fathoms Statute Miles Nautical Miles Light Year
 Enter time: Hours Minutes Seconds
 Speed is (select units before calculating): Metres per Second Kilometre per Hour Feet per Second Feet per Minute Yard per Minute Statute Mile per Hour Knot

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It all starts with this formula:
 Speed = Distance Time
That's the formula when we have time and distance and want to know the speed (velocity).

If we have speed and time, and want to know the distance:

Distance = Speed × Time

And finally, if we have speed and distance, and want to calculate the time:

 Time = Distance Speed