Length Conversion Chart
Use this printable length chart for common metric, imperial, nautical, and typography conversions. It is designed for quick reference, while the live converter handles arbitrary values and full unit tables.
| Unit | Metric reference | Imperial or print reference | Use note |
|---|---|---|---|
| Millimeters | 1 millimeter | 0.0393700787 inch | Useful for measurement and scale checks. |
| Centimeters | 1 centimeter | 0.3937007874 inch | Useful for measurement and scale checks. |
| Meters | 1 meter | 3.280839895 feet | Useful for measurement and scale checks. |
| Kilometers | 1 kilometer | 0.6213711922 mile | Useful for measurement and scale checks. |
| Inches | 1 inch | 25.4 millimeters | Useful for measurement and scale checks. |
| Feet | 1 foot | 0.3048 meter | Useful for measurement and scale checks. |
| Yards | 1 yard | 0.9144 meter | Useful for measurement and scale checks. |
| Miles | 1 mile | 1.609344 kilometers | Useful for measurement and scale checks. |
| Nautical miles | 1 nautical mile | 1852 meters | Useful for measurement and scale checks. |
| Points | 1 point | 1/72 inch | Useful for typography and layout. |
| Picas | 1 pica | 1/6 inch | Useful for typography and layout. |
Exact inch
1 inch equals exactly 25.4 millimeters, anchoring feet, yards, points, and picas.
Metric prefixes
Millimeters, centimeters, meters, and kilometers scale by powers of ten.
Print units
Points and picas are included for layout and typography checks.
Length chart questions
What is the most important exact length conversion?
The exact inch relationship is one of the most important length conversions for print and imperial work: 1 inch equals exactly 25.4 millimeters. Feet, yards, points, and picas all connect back through that relationship.
Why include points and picas in a length chart?
Points and picas are print and typography length units. They are useful when layout measurements, font sizes, and page design values need to be compared with inches or millimeters.
Is a nautical mile the same as a mile?
No. A nautical mile is exactly 1852 meters, while an international mile is exactly 1609.344 meters. Nautical miles are used in marine and aviation contexts rather than ordinary road-distance work.
Can I use this chart instead of the live converter?
Use the chart for common reference values and printed lookup work. Use the live length converter when the source value is not one unit, when scientific notation is needed, or when you need every supported unit in a full table.
Does the chart use the survey foot?
No. The chart uses the international foot based on the exact inch relationship. Older U.S. survey-foot references should be handled separately when working with legacy land-survey data.
Sources: SI meter relationships from NIST SI length references, exact inch relationship through SI-based customary definitions, and nautical mile as 1852 meters.