WebToolArcFormula and interpretation
speed = distance unit per hour ÷ pace duration per distance unit.
Keep pace units consistent; min/km and min/mile correspond to different speed scales.
Worked check
A pace of 5:00 per kilometer means 12 km/h because 60 minutes ÷ 5 minutes per kilometer = 12 kilometers per hour. A pace of 5:00 per mile represents a different speed, so keep the distance unit visible.
Rule: speed = distance unit per hour ÷ pace duration per distance unit. Keep pace units consistent; min/km and min/mile correspond to different speed scales. For a final check, estimate the expected size of the answer before copying it, keep units consistent, and round only the displayed result rather than intermediate values. Re-enter one simple case by hand when possible; a result with the wrong sign or order of magnitude usually points to an input or reference-base mistake.