Length & Distance Converters
Length conversions connect metric units such as millimeters, centimeters, meters and kilometers with common US customary and international units such as inches, feet and miles. Solveberry keeps both directions on one page and shows the factor used.
Choose the converter that matches the unit pair in your source, then use either direction on the same page. Solveberry keeps reverse conversions together on one canonical URL and shows the exact international definitions behind inches, feet and miles so common metric and imperial results can be checked independently.
Key reference points
| Reference | Equivalent / method |
|---|---|
| 1 inch | 25.4 mm exactly |
| 1 foot | 0.3048 m exactly |
| 1 mile | 1.609344 km exactly |
Length Unit Standards
Reference the exact international definitions behind inches, feet and miles, plus how those standards connect to metric length units.
Read the reference guideTools in this topic
Meters to Feet Converter (m to ft)
Convert meters to feet or feet to meters using the exact international foot. “Metre/metres” is the same unit spelling used in many English-speaking countries.
LengthCentimeters to Inches Converter (cm to inches)
Convert centimeters to inches (cm to inches) or inches to centimeters (inch to cm). 2.54 cm = exactly 1 inch under the international definition.
LengthKilometers to Miles Converter (km to miles)
Convert kilometers (km) to miles or miles to kilometers using the exact international mile. Includes common values such as 44.7 km and 446 km.
LengthMillimeters to Inches Converter (mm to in)
Convert millimeters to inches or inches to millimeters using the exact international definition of 25.4 millimeters per inch.
LengthFeet to Inches Converter (ft to in)
Convert feet and inches in either direction using exactly 12 inches per international foot.
How Solveberry handles this topic
Each calculator keeps its formula visible, links to related calculations, and avoids separate reverse-direction pages. When regional definitions can change a result, the relevant standard is selected explicitly.