MPH to MPS Converter — Convert mph to m/s (Exact: × 0.44704)
Professional miles per hour (mph) to meters per second (m/s) converter using the exact SI constant: 1 mph = 0.44704 m/s. Ideal for engineering, athletics, robotics/UAV, automotive telemetry, and research dashboards.
Exact constant: 1 mph = 0.44704 m/s. Explore the full family on our free online speed conversion tools hub.
About MPH to MPS Conversion
Miles per hour (mph) is ubiquitous in Tier-1 markets—on road signs, vehicle clusters, and consumer apps. Meters per second (m/s) is the SI unit used by engineers, coaches, and researchers because it dovetails with equations of motion, power models, aerodynamics, and control theory. Converting mph → m/s lets you keep public-facing numbers familiar while running analysis in a unit that makes formulas cleaner and less error-prone. For a broader set of calculators and paired tools, visit our free speed metric calculator category.
MPH to MPS Formula
Exact relationship
Use the factor method:
m/s = mph × 0.44704
// derived from
m/s = mph × (1609.344 / 3600)Example:
75 mph × 0.44704 = 33.52800 m/sReverse calculation (m/s → mph)
Multiply by 2.236936292 (exactly 3600/1609.344): mph = (m/s) × 2.236936292.
What is mph?
Miles per hour measures statute miles traveled per hour. It’s standard across U.S. road systems and widely used in media, automotive reviews, and fleet dashboards that default to imperial/US customary units.
What is m/s?
Meters per second is the SI base unit for speed. It plugs directly into physics and engineering: kinetic energy (½mv²), aerodynamic drag (½ρv²CdA), braking distance models, gait mechanics, and controller gains in robotics/UAVs.
Step-by-Step: Converting mph to m/s
- Record the speed in mph (vehicle cluster, GPS, log, or report).
- Multiply by 0.44704.
- Label the result in m/s. Round per your reporting policy (e.g., two decimals for dashboards).
Example walkthroughs (practical):
Athletics: 22 mph × 0.44704 = 9.83 m/s (sprint analysis)
Automotive: 60 mph × 0.44704 = 26.82 m/s (stopping-distance benchmark)
Robotics: 12 mph × 0.44704 = 5.36 m/s (trajectory constraint)Common Conversions
Everyday checks for engineering, athletics & robotics
| mph | m/s |
|---|---|
| 10 | 4.47040 |
| 20 | 8.94080 |
| 30 | 13.41120 |
| 40 | 17.88160 |
| 50 | 22.35200 |
| 60 | 26.82240 |
| 70 | 31.29280 |
| 80 | 35.76320 |
| 90 | 40.23360 |
| 100 | 44.70400 |
Precision, Rounding & Significant Figures
Operational rounding
Public dashboards often show one or two decimals in m/s. Analytics and control loops usually retain full precision internally and round at the UI layer. Consistent rounding rules prevent “drift” across PDFs, tables, and BI exports.
Consistent documentation
Standardize fields (e.g., speed_mph, speed_ms), convert once at ingestion, and include a short note: “Conversion uses 1 mph = 0.44704 m/s (exact).”
Related Speed Converters
Quick Reference Table
| m/s | mph |
|---|---|
| 5.00 | 11.18468 |
| 10.00 | 22.36936 |
| 15.00 | 33.55404 |
| 20.00 | 44.73873 |
| 25.00 | 55.92341 |
| 30.00 | 67.10809 |
| 35.00 | 78.29277 |
| 40.00 | 89.47745 |
Frequently Asked Questions
How do you convert mph to m/s exactly?
Use the exact SI relationship: m/s = mph × 0.44704. This comes from 1 mile = 1609.344 meters and 1 hour = 3600 seconds, so 1 mph = 1609.344/3600 m/s = 0.44704 m/s.
What is 1 mph in m/s?
1 mph = 0.44704 m/s exactly. For mental math you can use 0.45, but for analytics and audit trails keep 0.44704.
Why do engineers prefer m/s while road signs use mph?
m/s is the SI base unit and integrates directly with physics (forces, energy, fluid dynamics). mph is familiar for road contexts and public communication. Converting mph → m/s aligns field data with equations and models.
Does wind, gradient, tire size, or sensor smoothing change the conversion?
No. Those factors affect the measured value, not the unit relationship. The conversion factor 0.44704 is fixed and exact.
What precision should I use for dashboards and reports?
Keep full precision internally and round on presentation. 2–3 decimals in m/s are common in dashboards (e.g., 13.41 m/s). Document the constant: 1 mph = 0.44704 m/s.
How do I convert back from m/s to mph?
Multiply by 2.236936292 (exactly 3600/1609.344). The reverse page is linked below in Related Speed Converters.
Is 'mps' the same as m/s?
Yes. mps is a common shorthand for meters per second. Both mean the same unit.
Where is mph → m/s conversion used in practice?
Athletics (split pacing and wind analysis), automotive telemetry and ADAS validation, robotics/UAV controller tuning, and research (CFD/meteorology, biomechanics).
Can I chain mph → km/h → m/s instead of converting directly?
You can (mph × 1.609344 = km/h, then ÷ 3.6 = m/s), but direct mph × 0.44704 is simpler and reduces rounding opportunities.
Why do two apps show slightly different m/s values after conversion?
Differences typically come from sampling intervals, smoothing, map matching, or rounding policies. The underlying conversion factor is the same.
Tips for Working with mph & m/s
- Include both mph and m/s columns when collaborating across technical and non-technical teams.
- Convert once at ingestion; keep raw telemetry precise and immutable. Round only for final presentation.
- Document the identity (mph × 0.44704) so reviewers can reproduce results exactly.
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