Exact definitions
For example, conversions use internationally defined values such as 1 inch = 2.54 centimetres and 1 nautical mile = 1,852 metres.
Length Converter
Firstly, use our free length converter to convert length and distance values instantly between metric, imperial, US customary, and nautical units. Additionally, calculations run privately right inside your browser without sending data to servers.
Convert a length
To begin with, enter a value and choose the source and destination units. Then, the result updates instantly in your browser.
Conversion result
Converted value
1 m = 100 cm
- Value in metres
- 1 m
- Applied formula
- × 100
Meanwhile, results are rounded for display while the conversion uses the full numeric value.
Browser processing: specifically, conversions run on this device.
No value submission: moreover, entered measurements are not sent to Tool Radar 360.
Transparent factors: finally, all units are normalized through metres.
Popular Length Converter Comparisons
For this purpose, use these exact or commonly rounded values as a quick reference when you convert length online.
| Starting value | Converted value | Status |
|---|---|---|
| 1 inch | 2.54 centimetres | Exact |
| 1 foot | 12 inches | Exact |
| 1 yard | 3 feet | Exact |
| 1 metre | 39.37007874 inches | Rounded |
| 1 mile | 1.609344 kilometres | Exact |
| 1 nautical mile | 1.852 kilometres | Exact |
How to Use the Length Converter
Enter the value
First, type the non-negative length or distance you want to convert.
Choose both units
Next, select the current unit in the From list and the required unit in the To list.
Read or copy the result
Finally, review the converted value, swap the units if needed, or copy the result.
How the Length Converter Works
Initially, every supported unit has a fixed conversion factor in metres as defined by the International System of Units (SI). Consequently, the length converter first changes the entered value into metres and then divides that base value by the destination unit’s metre value.
Converted value = entered value × source factor in metres ÷ destination factor in metres
For example, one inch is exactly 0.0254 metres, one international foot is exactly 0.3048 metres, and one international mile is exactly 1,609.344 metres.
Worked Length Converter Example
For instance, convert 5 metres to feet using our metric length converter as follows:
Firstly, Step 1 uses a source factor of 1 for metres.
Next, Step 2 uses the destination factor of 0.3048 for feet.
Then, Step 3 calculates 5 × 1 ÷ 0.3048 = 16.4041994751.
Result: Therefore, 5 metres is approximately 16.4042 feet.
Precision Rules for the Length Converter
Display rounding
In contrast, the interface displays up to 12 significant digits. Moreover, very large or very small results may use scientific notation.
Length, not area or volume
Specifically, these factors apply to one-dimensional length. Therefore, area factors must be squared and volume factors must be cubed.
Common Length Converter Use Cases
Construction and design
For example, compare plans, room dimensions, material sizes, and product specifications across measurement systems using our imperial length converter.
Travel and navigation
In addition, convert kilometres, miles, and nautical miles when reviewing routes or distance information.
Science and education
Similarly, move between nanometres, micrometres, millimetres, metres, and kilometres for assignments or reference.
Length Converter FAQs
How many centimetres are in one inch?
Specifically, there are exactly 2.54 centimetres in one international inch.
Is a metre longer than a yard?
Yes. In fact, one metre is approximately 1.093613 yards, while one yard is exactly 0.9144 metres.
What is the difference between a mile and a nautical mile?
Specifically, an international mile is exactly 1,609.344 metres. In contrast, a nautical mile is exactly 1,852 metres and is commonly used in marine and aviation navigation.
Can this length converter handle decimal values?
Yes. Furthermore, it accepts non-negative whole numbers and decimal values.
Why can the displayed result be rounded?
Some unit ratios produce repeating decimals. However, the tool calculates with JavaScript numeric precision and displays up to 12 significant digits for readability.
Are my measurements uploaded or stored?
No. In fact, this length converter runs in your browser and does not submit entered values to Tool Radar 360.