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1 km/h vs 1 km/s · speed
1 km/h has 2.78e-4 times the speed of 1 km/s. Choose another pair, swap objects or enter a custom reference. Shared links preserve your settings; SVG downloads preserve the labels and exact values.
Measurement: speed
| First object | Value |
|---|---|
| 1 km/h | 0.27777778 m/s |
| 1 km/s | 1,000 m/s |
0.27777778 ÷ 1,000 ≈ 2.78e-4
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.
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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