# Convert ft/s to mm/s, mm/s to ft/s - Speed Conversion

Online calculators to convert feet per second to millimeters per second (ft/s to mm/s) and millimeters per second to feet per second (mm/s to ft/s). Our conversions provide a quick and easy way to convert between Speed units.

## Conversion Calculators

Enter your value in one of the conversion calculators below to **convert ft/s to mm/s ** or **convert mm/s to ft/s**.

### Convert ft/s to mm/s

### Convert mm/s to ft/s

* If the result of your conversion is 0, try increasing the "Decimals".

## Conversion Definitions

The following is a list of definitions relating to conversions between feet per second and millimeters per second.

### What are feet per second (ft/s)?

Feet per second is a unit of speed in both US Customary Units as well as the Imperial System. It measures the number of feet travelled in a second. The symbol for feet per second is ft/s. There are 0.0032808399 ft/s in mm/s.

### What are millimeters per second (mm/s)?

Millimeters per second is a unit of speed in the Metric System. It measures the number of millimeters travelled in a second. The symbol for millimeters per second is mm/s and the International spelling is millimetres per second. There are 304.8 mm/s in ft/s.

## Conversion Formulas

Let's take a closer look at the conversion formulas so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.

The formula to convert from ft/s to mm/s is:

mm/s = ft/s x 304.8

The formula to convert from mm/s to ft/s is:

ft/s = mm/s ÷ 304.8

## Conversion Examples

Next, let's look at some examples showing the work and calculations that are involved in converting from feet per second to millimeters per second (ft/s to mm/s) or converting from millimeters per second to feet per second (mm/s to ft/s).

### Feet per second to Millimeters per second Conversion Example

Task: Convert 75 feet per second to millimeters per second (show work)Formula:ft/s x 304.8 = mm/sCalculations:75 ft/s x 304.8 = 22,860 mm/sResult:75 ft/s is equal to 22,860 mm/s

### Millimeters per second to Feet per second Conversion Example

Task: Convert 2,500 millimeters per second to feet per second (show work)Formula:mm/s ÷ 304.8 = ft/sCalculations:2,500 mm/s ÷ 304.8 = 8.2020997375 ft/sResult:2,500 mm/s is equal to 8.2020997375 ft/s

## Conversion Tables

For quick reference purposes, below are conversion tables that you can use to convert from ft/s to mm/s, and mm/s to ft/s.

### Feet per second to Millimeters per second Conversion Chart

feet per second (ft/s) | millimeters per second (mm/s) |
---|---|

1 ft/s | 304.8 mm/s |

2 ft/s | 609.6 mm/s |

3 ft/s | 914.4 mm/s |

4 ft/s | 1,219.2 mm/s |

5 ft/s | 1,524 mm/s |

6 ft/s | 1,828.8 mm/s |

7 ft/s | 2,133.6 mm/s |

8 ft/s | 2,438.4 mm/s |

9 ft/s | 2,743.2 mm/s |

10 ft/s | 3,048 mm/s |

20 ft/s | 6,096 mm/s |

30 ft/s | 9,144 mm/s |

40 ft/s | 12,192 mm/s |

50 ft/s | 15,240 mm/s |

75 ft/s | 22,860 mm/s |

100 ft/s | 30,480 mm/s |

250 ft/s | 76,200 mm/s |

500 ft/s | 152,400 mm/s |

750 ft/s | 228,600 mm/s |

1,000 ft/s | 304,800 mm/s |

2,500 ft/s | 762,000 mm/s |

5,000 ft/s | 1,524,000 mm/s |

7,500 ft/s | 2,286,000 mm/s |

10,000 ft/s | 3,048,000 mm/s |

25,000 ft/s | 7,620,000 mm/s |

50,000 ft/s | 15,240,000 mm/s |

75,000 ft/s | 22,860,000 mm/s |

100,000 ft/s | 30,480,000 mm/s |

250,000 ft/s | 76,200,000 mm/s |

### Millimeters per second to Feet per second Conversion Chart

millimeters per second (mm/s) | feet per second (ft/s) |
---|---|

1 mm/s | 0.0032808399 ft/s |

2 mm/s | 0.0065616798 ft/s |

3 mm/s | 0.0098425197 ft/s |

4 mm/s | 0.0131233596 ft/s |

5 mm/s | 0.0164041995 ft/s |

6 mm/s | 0.0196850394 ft/s |

7 mm/s | 0.0229658793 ft/s |

8 mm/s | 0.0262467192 ft/s |

9 mm/s | 0.0295275591 ft/s |

10 mm/s | 0.032808399 ft/s |

20 mm/s | 0.0656167979 ft/s |

30 mm/s | 0.0984251969 ft/s |

40 mm/s | 0.1312335958 ft/s |

50 mm/s | 0.1640419948 ft/s |

75 mm/s | 0.2460629921 ft/s |

100 mm/s | 0.3280839895 ft/s |

250 mm/s | 0.8202099738 ft/s |

500 mm/s | 1.6404199475 ft/s |

750 mm/s | 2.4606299213 ft/s |

1,000 mm/s | 3.280839895 ft/s |

2,500 mm/s | 8.2020997375 ft/s |

5,000 mm/s | 16.4041994751 ft/s |

7,500 mm/s | 24.6062992126 ft/s |

10,000 mm/s | 32.8083989501 ft/s |

25,000 mm/s | 82.0209973753 ft/s |

50,000 mm/s | 164.0419947507 ft/s |

75,000 mm/s | 246.062992126 ft/s |

100,000 mm/s | 328.0839895013 ft/s |

250,000 mm/s | 820.2099737533 ft/s |

## Understanding the Speed Units

This table provides a summary of the Speed units within their respective measurement systems.

Unit | Symbol | Measurement System | Description |
---|---|---|---|

inches per second | in/s | US Customary Units/Imperial System | |

feet per second | ft/s | US Customary Units/Imperial System | 1 ft/s = 12 in/s |

yards per second | yd/s | US Customary Units/Imperial System | 1 yd/s = 3 ft/s |

miles per second | mi/s | US Customary Units/Imperial System | 1 mi/s = 1760 yd/s 1 mi/s = 5280 ft/s |

millimeters per second | mm/s | Metric System | 1000 mm/s = 1 m/s |

centimeters per second | cm/s | Metric System | 100 cm/s = 1 m/s 1 cm/s = 10 mm/s |

decimeters per second | dm/s | Metric System | 10 dm/s = 1 m/s 1 dm/s = 10 cm/s |

meters per second | m/s | Metric System | 1 m/s = 1000 mm/s 1 m/s = 100 cm/s 1 m/s = 10 dm/s |

kilometers per second | km/s | Metric System | 1 km/s = 1000 m/s |

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