Length Converters
Convert length and distance between metric and imperial units — centimeters, inches, meters, feet, miles, kilometers, and more. Each calculator runs entirely in your browser, updates as you type, and includes a worked reference table plus the mathematical formula.
Length is the everyday measurement — the one that sits under clothing purchases, travel planning, home renovation, school geometry, and sports. Two great traditions still share the job of quantifying how long, how tall, or how far. The metric family — millimeters, centimeters, meters, kilometers — grew out of the French revolutionary commitment to a universal decimal science. The imperial family — inches, feet, yards, miles — crystallized over centuries of Roman-derived English common law and survived in American daily life long after most of the world moved on. The 1959 international yard-and-pound agreement bridged the two by pinning every imperial unit to an exact metric equivalent, so modern conversions are precise rather than approximate.
Choose a conversion
Centimeters to Inches
Body measurements, TV diagonals, and US-to-EU apparel sizing.
Inches to Centimeters
US apparel sizing, airline luggage dimensions, and travel gear.
Millimeters to Inches
Precision machining, drill bit sets, and gunsmithing.
Inches to Millimeters
Photo print mat sizes, firearm calibers, and lens threads.
Inches to Feet
Construction framing, ceiling heights, and lumber cut lists.
Feet to Inches
Height records, doorway widths, and rope or lumber by length.
Centimeters to Meters
Fabric bolts, growth charts, and interior design planning.
Centimeters to Millimeters
Jewelry, PCB layout, and fine-detail precision work.
Millimeters to Centimeters
Pharmaceutical dosing, medical imaging, and ruler reading.
Miles to Kilometers
Race distances, road trips, and running pace comparisons.
Kilometers to Miles
European road signage, fuel economy, and international travel.
Meters to Feet
Real-estate square footage, pool depths, and aviation altitudes.
Meters to Yards
Competitive swimming, track athletics, and fabric comparisons.
Yards to Meters
Golf course distances, cricket pitches, and football fields.