Kilometers per Hour to Feet per Second Converter

Enter a speed in km/h and instantly get the equivalent in feet per second.

Use the Kilometers per Hour to Feet per Second Converter

Speed Converter

Reverse: ft/s → km/h

Common Reference Speeds

Description km/h ft/s

Conversion formula: ft/s = km/h ÷ 1.09728
Reverse: km/h = ft/s × 1.09728

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Summary

This converter divides your km/h value by exactly 1.09728 to produce feet per second. The factor derives from the SI definition: 1 foot = 0.3048 m, so 1 ft/s = 1.09728 km/h, meaning km/h ÷ 1.09728 = ft/s. Results are rounded to four decimal places for everyday use and six for engineering.

How it works

  1. Enter a speed value in the km/h field.
  2. The tool divides the input by 1.09728 (the exact conversion factor).
  3. The ft/s result appears instantly below the input.
  4. Use the reverse field to convert ft/s back to km/h.
  5. Check the reference table for common speed benchmarks.

Use cases

  • Translate metric vehicle speeds into feet per second for physics calculations.
  • Convert international weather or wind data to ft/s for US engineering reports.
  • Cross-check athletic or ballistic speeds between metric and imperial systems.
  • Compare sensor readings from metric dashboards with ft/s-based instruments.
  • Support homework problems that require both unit systems.

Frequently Asked Questions

Last updated: 2026-06-15 · Reviewed by Nham Vu