UnitConvConvert
Speed

Convert inches per minute to feet per second

1 in/min=0.001388ft/s

Use the converter below to change any inches per minute value into feet per second instantly — with formula, conversion table, and real-world examples.

0.0013878

Conversion formula

Forward
feet per second = inches per minute × 0.001388
Reverse
inches per minute = feet per second × 720.567

Example: 10 in/min × 0.001388 = 0.01388 ft/s.

About both units

From

Inch per Minute

in/min

Inches per minute (in/min) is used in CNC machining, 3D printing, some flow-rate specifications and US plant growth studies. CNC cutting feed rates are typically 10–100 in/min.

Real-world: CNC aluminum cut: 20–60 in/min. 3D printer travel: 60–200 in/min. Plant growth: fractions of in/min × time.
Read full inch per minute reference →
To

Foot per Second

ft/s

Feet per second (ft/s) is used in some US engineering, ballistics (bullet velocity) and older US physics textbooks. Typical handgun muzzle velocity: 1000–1400 ft/s. Rifle muzzle velocity: 2500–3500 ft/s.

Real-world: 9mm bullet muzzle velocity: ~1150 ft/s. .308 rifle: ~2700 ft/s. Free fall terminal velocity: ~195 ft/s.
Read full foot per second reference →

Inch per Minute to Foot per Second conversion table

Common inches per minute to feet per second values for quick reference.

Inch per Minute (in/min)Foot per Second (ft/s)
1 in/min0.001388 ft/s
5 in/min0.006939 ft/s
10 in/min0.01388 ft/s
25 in/min0.03469 ft/s
50 in/min0.06939 ft/s
100 in/min0.1388 ft/s
150 in/min0.2082 ft/s
200 in/min0.2776 ft/s
300 in/min0.4163 ft/s
500 in/min0.6939 ft/s

Tips & common mistakes

Quick tips

  • 1 in/min = 0.000423 m/s = 0.0254 m/min.
  • CNC: lower in/min for harder materials; higher for softer.
  • Always match tool speed and material — too fast breaks bits.

Avoid these

  • Using mm/min and in/min interchangeably in CNC — 25.4× difference.
  • Treating 100 in/min as fast — only moderate in CNC.
  • Confusing feed rate with spindle RPM.

Frequently asked questions

How many feet per second in a inch per minute?
One inch per minute equals 0.001388 feet per second.
How do I convert inches per minute to feet per second?
Multiply the inch per minute value by 0.001388 to get the equivalent in feet per second.
What is 100 inches per minute in feet per second?
100 inches per minute equals 0.1388 feet per second.
Is a inch per minute bigger than a foot per second?
No. 1 inch per minute equals 0.001388 feet per second, so one inch per minute is smaller.
How to convert inches per minute to feet per second without a calculator?
Multiply by 0 for a quick estimate; use a calculator for precise results.

Related speed conversions

📊 See full comparison matrix →

More from Inch per Minute

in/min → km/h
1 = 0.001523 km/h
in/min → m/s
1 = 0.000423 m/s
in/min → mph
1 = 0.0009462 mph
in/min → kn
1 = 0.0008222 kn
in/min → Ma
1 = 1.2431e-6 Ma
in/min → cm/s
1 = 0.0423 cm/s
in/min → yd/min
1 = 0.02776 yd/min
in/min → Bft
1 = 0.000423 Bft

More to Foot per Second

km/h → ft/s
1 = 0.9113 ft/s
m/s → ft/s
1 = 3.28084 ft/s
mph → ft/s
1 = 1.46667 ft/s
kn → ft/s
1 = 1.68781 ft/s
Ma → ft/s
1 = 1,116.44 ft/s
cm/s → ft/s
1 = 0.03281 ft/s
yd/min → ft/s
1 = 0.05 ft/s
Bft → ft/s
1 = 3.28084 ft/s

Conversions in other categories

WeightKilogram → PoundLengthKilometer → MileTemperatureCelsius → FahrenheitVolumeLiter → US GallonAreaSquare Meter → Square FootEnergyKilojoule → KilocaloriePressureBar → Pound per Square InchPowerKilowatt → Mechanical Horsepower