ConvBolt — Unit ConverterMiles per hour to Feet per second Converter
Converting miles per hour to feet per second is a multiplication by a fixed factor: 1 mph = 1.466667 ft/s. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one mile per hour works out to 1.466667 ft/s, the foot per second is the slightly larger unit of the two: a figure given in foot per second always carries a larger number than the same measurement in mile per hour. A chart drawn in mph can hide that, so check which label the axis uses before you compare two readings.
Driving and sport are the everyday sources of this pair: a dashboard reading in miles per hour against a speed limit posted in feet per second, or a training plan written in one while a device reports the other.
The conversion factor used here is 1.466667 ft/s per mile per hour (6 significant digits as shown). Kept to seven figures it covers professional measurement; if you round it to two or three decimals for a spreadsheet, the error scales with the input — at a value of 1,000 mph a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 0.6818182 mph per ft/s, the exact reciprocal, so a round trip through both pages returns your original number.
Miles per hour to Feet per second formula
Use this formula to convert any mile per hour value to feet per second:
Worked example: 100 mph × 1.466667 = 146.6667 ft/s.
Miles per hour to Feet per second conversion table
| Miles per hour (mph) | Feet per second (ft/s) |
|---|---|
| 0.5 mph | 0.7333333 ft/s |
| 1 mph | 1.466667 ft/s |
| 2 mph | 2.933333 ft/s |
| 5 mph | 7.333333 ft/s |
| 10 mph | 14.66667 ft/s |
| 20 mph | 29.33333 ft/s |
| 50 mph | 73.33333 ft/s |
| 100 mph | 146.6667 ft/s |
| 500 mph | 733.3333 ft/s |
| 1000 mph | 1466.667 ft/s |
How to convert miles per hour to feet per second
Multiply the mile per hour value by 1.466667 to get the equivalent in feet per second. This single factor works for every value in the table above and for anything else you need — there is no per-value adjustment, which is why a conversion table and a calculator always agree.
If you need the opposite direction, use the Feet per second to Miles per hour converter instead of dividing by hand; both pages use the same source factors. For every other mph conversion in one place, see the mph conversion hub.
Frequently asked questions
How many feet per second are in 1 mile per hour?
1 mile per hour = 1.466667 ft/s.
What is 100 miles per hour in feet per second?
100 mph = 146.6667 ft/s.
Is converting miles per hour to feet per second the same as feet per second to miles per hour?
No — the direction changes the multiplier. The reverse conversion (1 ft/s = 0.6818182 mph) is on the Feet per second to Miles per hour page.
Related conversions
Try the ConvBolt Unit Converter for any other speed unit, browse the Speed conversions, or read our conversion guides.