Feet per second to Meters per second Calculator

Direct answer

Multiply the entered feet per second value by 0.3048 to express it in meters per second (m/s). This converts foot per second (ft/s) to meter per second (m/s) within the documented speed family.

Variables and formula

• Feet per second (ft/s): the source value measured in foot per second.
• Meters per second (m/s): the same quantity expressed in meter per second.
• Conversion factor: 0.3048 meters per second per foot per second.

Meters per second = Feet per second × 0.3048

The generator emits numeric factors with at most 15 significant digits. Calculator results keep up to 10 significant digits for display; this formatting does not increase the precision of the measurement.

Unit definitions and named variants

Source unit: foot per second (ft/s). One foot per second uses the international foot: 1 ft/s = 0.3048 m/s exactly. Named variant used: International foot per second; not U.S. survey foot per second. Reference: National Institute of Standards and Technology: NIST Handbook 44 (2026), Appendix C: General Tables of Units of Measurement.

Target unit: meter per second (m/s). Meter per second is the coherent SI unit of speed, representing one meter of distance per second of elapsed time. Named variant used: Speed magnitude; direction is not represented. Reference: Bureau International des Poids et Mesures: The International System of Units (SI), 9th edition, version 4.01.

The ft/s-to-m/s direction remains inside the speed quantity; it changes the unit label and numerical scale, not the kind of quantity being measured.

Relationship and precision

The named unit relationships are defined or exact, so the conversion is exact before display rounding and source-measurement uncertainty.

• ft/s relationship: The terminating base factor is exact.
• m/s relationship: The base factor is exactly 1 by the family base-unit choice.

To audit the factor through the family base unit, divide the raw dataset factors 0.3048 by 1. The generator emits that quotient once at 15 significant digits as the canonical direct factor 0.3048; runtime calculations do not divide the already-emitted base factors again.

Reproducible example

For 10 feet per second, 10 × 0.3048 = 3.048 meters per second. Repeating the same multiplication with the stated factor reproduces the displayed conversion before interface rounding.

Directional scale check

Because one foot per second contains 0.3048 meters per second, the target number is smaller than the source number for every positive input. Zero maps to zero, while negative inputs are rejected because this family models non-negative magnitudes.

Interpretation

Read the result as meters per second, not feet per second. A value entered as ft/s leaves the calculator labelled m/s; this directional distinction matters even when the two units describe the same speed quantity.

Assumptions and limitations

• Only non-negative speed magnitudes are accepted; use a velocity model when direction or sign matters.
• Knot means exactly one international nautical mile per hour; the symbol kn is a CalcMotive display convention because the current SI Brochure notes that no internationally agreed unit symbol exists for the knot.
• This family converts non-negative speed magnitudes, not signed velocity vectors, acceleration, pace, or average-speed models.

Common mistakes

• ft/s is speed; ft/s² is acceleration.
• m/s is speed; m/s² is acceleration.

Continue within the Speed family

See the Speed conversion hub for its five-unit reference table and all 20 directed routes.

• Reverse the direction: Meters per second to Feet per second
• Compare another speed route: Feet per second to Kilometers per hour
• Compare another speed route: Feet per second to Miles per hour
• Compare another speed route: Feet per second to Knots
• Compare another speed route: Meters per second to Kilometers per hour

Assumptions

• The entered value uses feet per second exactly as labelled.
• Only non-negative speed magnitudes are accepted; use a velocity model when direction or sign matters.
• Rounding and measurement uncertainty remain the user's responsibility.

Sources and methodology

CalcMotive publishes the formula and assumptions so you can decide whether the estimate fits your use case. See our methodology standards.

• The International System of Units (SI), 9th edition, version 4.01; Bureau International des Poids et Mesures; accessed Aug 7, 2026
• NIST Handbook 44 (2026), Appendix C: General Tables of Units of Measurement; National Institute of Standards and Technology; accessed Aug 7, 2026