Measurement: speed

First object	Value
1 m/s	1 m/s
1 km/h	0.27777778 m/s

1 ÷ 0.27777778 ≈ 3.6

Sources & method

Speed is distance divided by elapsed time. One kilometre per hour is 1000/3600 metres per second. Displayed decimals are rounded; calculations use the underlying ratios.

Ratio = first value ÷ second value. For areas, side lengths use the square root of the area ratio. Diameter and height use a linear scale.

BIPM · SI Brochure

Choose another pair, swap objects or enter a custom reference. Shared links preserve your settings; SVG downloads preserve the labels and exact values.

Updated 23 October 2026 · Denny Lim

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