# Convert 18 kilometers per hour to miles per hour

How many miles per hour are 18 kilometers per hour?

kilometers per hour (km/h)
18 kilometers per hour = 11.185 miles per hour

## Precise decimal and fraction answers

The conversion in miles per hour rounded to six significant decimal places is 18 km/h = 11.184681 mph. The precise fraction answer is 11 258/1397 mph.

### Decimal Precision

Conversion from one to ten decimal places

• 18 km/h = 11.2 mph
• 18 km/h = 11.18 mph
• 18 km/h = 11.185 mph
• 18 km/h = 11.1847 mph
• 18 km/h = 11.18468 mph
• 18 km/h = 11.184681 mph
• 18 km/h = 11.1846815 mph
• 18 km/h = 11.18468146 mph
• 18 km/h = 11.184681460 mph
• 18 km/h = 11.1846814603 mph

## How many miles per hour is a kilometer per hour?

A kilometer per hour is slower than a mile per hour. 0.621 miles per hour is the same velocity as one kilometer per hour. A kilometer per hour is 62.14% the velocity a mile per hour. An object moving at a mile per hour is 60.93% faster than an object traveling at one kilometer per hour.

## Kilometers per hour to miles per hour conversion factor and formulas

Formula

The conversion factor between kilometers per hour and miles per hour is 1.609. This represents the ratio of kilometers per hour per one mile per hour. To calculate the value in miles per hour, we can either divide by the conversion factor or multiply by its inverse.

### Division

To convert from kilometers per hour to miles per hour, divide kilometers per hour by 1.609.
The formula is expressed as:
km/h ÷ 1.609 = mph

### Multiplication

Alternatively we can multiply by the inverse conversion factor to get the same result.
The inverse of 1.609 is 1/1.609 or 0.621. To convert from kilometers per hour to miles per hour, multiply kilometers per hour by 0.621.
The formula is expressed as:
km/h × 0.621 = mph

To convert 18 kilometers per hour to miles per hour, divide 18 kilometers per hour by 1.609.
18 km/h ÷ 1.609 = 11.185 mph

## How fast are 18 kilometers per hour?

Real world scale examples to visualize the velocity of 18 kilometers per hour / 11.185 miles per hour

• 3.73 times the typical walking speed (3 mph)
• 93% of the comfortable bicycling speed (12 mph)
• 30% of the typical speed of a racehorse (37 mph)

Converting kilometers per hour to miles per hour is a conversion between units from separate unit systems - kilometers per hour are metric (SI) defined units while miles per hour are US Customary / UK Imperial .

SI Unit

Within the SI (metric) system of measurement, a kilometer per hour (km/h) is the distance traveled in one hour as measured in kilometers (1,000 meters). It is commonly used as measurement of velocity over geographic distances. Kilometers per hour are commonly used to measure vehicle speed and speed limits. The official SI symbol is km/h, however kph and km/hr are also used.

Customary/Imperial Unit

Miles per hour is a velocity measurement within the US/UK Imperial systems. It is defined as the number of miles traveled in one hour. MPH is frequently used for measurement and regulation of vehicle speed limits in the US, UK and many British dependencies. The common symbols for miles per hour are mph, MPH or mi/hr.

## Reverse this conversion

Convert from miles per hour to kilometers per hour instead.

## 18 kilometers per hour to other speed units

### Metric

• 18 km/h = 18 km/h

### Imperial/U.S.

• 18 km/h = 11.185 mph
• 18 km/h = 9.719 kn

## References and Citations

1. International Bureau of Weights and Measures (BIPM) The International System of Units (SI)
2. National Institute of Standards and Technology (NIST) General Tables of Units of Measurement

## Decimal conversions for 18 km/h to mph

km/h mph
18.01 km/h 11.191 mph
18.02 km/h 11.197 mph
18.03 km/h 11.203 mph
18.04 km/h 11.21 mph
18.05 km/h 11.216 mph
18.06 km/h 11.222 mph
18.07 km/h 11.228 mph
18.08 km/h 11.234 mph
18.09 km/h 11.241 mph
18.1 km/h 11.247 mph
18.11 km/h 11.253 mph
18.12 km/h 11.259 mph
18.13 km/h 11.265 mph
18.14 km/h 11.272 mph
18.15 km/h 11.278 mph
18.16 km/h 11.284 mph
18.17 km/h 11.29 mph
18.18 km/h 11.297 mph
18.19 km/h 11.303 mph
18.2 km/h 11.309 mph
18.21 km/h 11.315 mph
18.22 km/h 11.321 mph
18.23 km/h 11.328 mph
18.24 km/h 11.334 mph
18.25 km/h 11.34 mph
18.26 km/h 11.346 mph
18.27 km/h 11.352 mph
18.28 km/h 11.359 mph
18.29 km/h 11.365 mph
18.3 km/h 11.371 mph
18.31 km/h 11.377 mph
18.32 km/h 11.384 mph
18.33 km/h 11.39 mph
18.34 km/h 11.396 mph
18.35 km/h 11.402 mph
18.36 km/h 11.408 mph
18.37 km/h 11.415 mph
18.38 km/h 11.421 mph
18.39 km/h 11.427 mph
18.4 km/h 11.433 mph
18.41 km/h 11.439 mph
18.42 km/h 11.446 mph
18.43 km/h 11.452 mph
18.44 km/h 11.458 mph
18.45 km/h 11.464 mph
18.46 km/h 11.471 mph
18.47 km/h 11.477 mph
18.48 km/h 11.483 mph
18.49 km/h 11.489 mph
18.5 km/h 11.495 mph
km/h mph
18.51 km/h 11.502 mph
18.52 km/h 11.508 mph
18.53 km/h 11.514 mph
18.54 km/h 11.52 mph
18.55 km/h 11.526 mph
18.56 km/h 11.533 mph
18.57 km/h 11.539 mph
18.58 km/h 11.545 mph
18.59 km/h 11.551 mph
18.6 km/h 11.558 mph
18.61 km/h 11.564 mph
18.62 km/h 11.57 mph
18.63 km/h 11.576 mph
18.64 km/h 11.582 mph
18.65 km/h 11.589 mph
18.66 km/h 11.595 mph
18.67 km/h 11.601 mph
18.68 km/h 11.607 mph
18.69 km/h 11.613 mph
18.7 km/h 11.62 mph
18.71 km/h 11.626 mph
18.72 km/h 11.632 mph
18.73 km/h 11.638 mph
18.74 km/h 11.644 mph
18.75 km/h 11.651 mph
18.76 km/h 11.657 mph
18.77 km/h 11.663 mph
18.78 km/h 11.669 mph
18.79 km/h 11.676 mph
18.8 km/h 11.682 mph
18.81 km/h 11.688 mph
18.82 km/h 11.694 mph
18.83 km/h 11.7 mph
18.84 km/h 11.707 mph
18.85 km/h 11.713 mph
18.86 km/h 11.719 mph
18.87 km/h 11.725 mph
18.88 km/h 11.731 mph
18.89 km/h 11.738 mph
18.9 km/h 11.744 mph
18.91 km/h 11.75 mph
18.92 km/h 11.756 mph
18.93 km/h 11.763 mph
18.94 km/h 11.769 mph
18.95 km/h 11.775 mph
18.96 km/h 11.781 mph
18.97 km/h 11.787 mph
18.98 km/h 11.794 mph
18.99 km/h 11.8 mph