# Convert decimeters to inches

Enter the number of decimeters you want to convert to inches in the text box below. The conversion to length in inches will update as you type.

decimeters (dm)
1 decimeters = 3.937 inches

## Precise decimal and fraction answers

The conversion in inches rounded to six significant decimal places is 1 dm = 3.937008 in. The precise fraction answer is 3 119/127 in.

### Decimal Precision

Conversion from one to ten decimal places

• 1 dm = 3.9 in
• 1 dm = 3.94 in
• 1 dm = 3.937 in
• 1 dm = 3.9370 in
• 1 dm = 3.93701 in
• 1 dm = 3.937008 in
• 1 dm = 3.9370079 in
• 1 dm = 3.93700787 in
• 1 dm = 3.937007874 in
• 1 dm = 3.9370078740 in

## Answer in feet and inches

1 dm equals 3 15/16 in using feet, inches and fractional inches instead of decimals as is traditional in the imperial system. This calculation is accurate to the nearest 1/64th of an inch.

## How many inches are in a decimeter?

There are 3.937 inches in one decimeter. A decimeter is 3.937 times longer than an inch. An inch is 25.40% of a decimeter

## Decimeters to inches conversion factor and formulas

Formula

The conversion factor between decimeters and inches is 3.937. This represents the ratio of inches per one decimeter. To calculate the value in inches, we can either multiply by the conversion factor or divide by its inverse.

### Multiplication

To convert from decimeters to inches, multiply decimeters by 3.937.
The formula is expressed as:
dm × 3.937 = in

### Division

Alternatively we can divide by the inverse conversion factor to get the same result.
The inverse of 3.937 is 1/3.937 or 0.254. To convert from decimeters to inches, divide decimeters by 0.254.
The formula is expressed as:
dm ÷ 0.254 = in

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

SI Unit

Within the SI (metric) system of measurement, the decimeter is officially defined as one tenth (1/10) of a meter. The decimeter is not widely used in everyday situations. Internationally it is spelled 'decimetre' whereas the U.S. spells it 'decimeter'. The symbol for decimeters is dm.

Customary/Imperial Unit

The inch is a length measurement within US Customary and British Imperial units of measure. It is officially defined as 25.4 millimeters. Twelve inches equal one foot and thirty six inches equal a yard in the US/Imperial systems. The abbreviation for inches is either in or " as in 12". When measuring in inches, it is common to subdivide the inch into fractional portions like a half-inch, quarter-inch, eighth of an inch etc. instead of using decimals. Inches are frequently used in the building construction trades in the US and Canada. Internationally, inches are a common measurement of tire size and display screen sizes. Historically the inch is derived from the width of an adult thumb.

## Reverse this conversion

Convert from inches to decimeters instead.

## 1 decimeters to other length units

### Metric

• 1 dm = 1×10-4 km
• 1 dm = 0.1 m
• 1 dm = 1 dm
• 1 dm = 10 cm
• 1 dm = 100 mm
• 1 dm = 100,000 µ
• 1 dm = 1×108 nm

### Imperial/U.S.

• 1 dm = 6.214×10-5 mi
• 1 dm = 0.109 yd
• 1 dm = 0.328 ft
• 1 dm = 3.937 in

## 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

## Decimeters to inches conversion table

dm in
1 dm 3.937 in
2 dm 7.874 in
3 dm 11.811 in
4 dm 15.748 in
5 dm 19.685 in
6 dm 23.622 in
7 dm 27.559 in
8 dm 31.496 in
9 dm 35.433 in
10 dm 39.37 in
dm in
20 dm 78.74 in
30 dm 118.11 in
40 dm 157.48 in
50 dm 196.85 in
60 dm 236.22 in
70 dm 275.591 in
80 dm 314.961 in
90 dm 354.331 in
100 dm 393.701 in
1,000 dm 3,937.008 in