Converti più metriche con facilità

Converte tra pollici, piedi, millimetri, centimetri, chilometri, metri, iarde e miglia.

Instant Length & Distance Converter

Need to switch from inches to centimeters, or jump between miles, kilometers, yards, and meters in seconds? You’re in the right place. At Centimetri alla calcolatrice we make unit conversion fast, accurate, and beginner-friendly.

Perfect for students, DIY projects, travel, engineering, sewing, construction, and everyday “what does this equal in metric?” moments.

👉 Open the Converter

⚡ Super Fast

Type a number, pick the units, get the answer instantly – no manual math.

🎯 Accurate Formulas

We use standard, widely accepted conversion factors so your results are reliable.

🧠 Easy to Understand

We also show the formula so you can learn how the conversion works.

📱 Works Anywhere

Mobile-friendly and WordPress-ready. Drop it in your site and go.

Try the Converter

Calcolatrice di conversione metrica

Inserisci un numero: Converti da: Converti in:

Risultato: 0

ℹ️ Enter a value of the metric on top. From (Metric) to get the to: (metric)

Most Popular Length Conversion Formulas

Below are the formulas we use (and that you can check yourself). You can plug your numbers in and verify the result you get from the calculator.

1. Inches ➝ Centimeters

Formula:

        cm = in × 2.54
      

Example: 5 in × 2.54 = 12.7 cm

2. Centimeters ➝ Inches

Formula:

        in = cm ÷ 2.54
      

Example: 10 cm ÷ 2.54 = 3.937 in

3. Feet ➝ Meters

Formula:

        m = ft × 0.3048
      

Example: 6 ft × 0.3048 = 1.8288 m

4. Meters ➝ Feet

Formula:

        ft = m × 3.28084
      

Example: 2 m × 3.28084 = 6.5617 ft

5. Miles ➝ Kilometers

Formula:

        km = mi × 1.60934
      

Example: 3 mi × 1.60934 = 4.828 km

6. Kilometers ➝ Miles

Formula:

        mi = km ÷ 1.60934
      

Example: 10 km ÷ 1.60934 ≈ 6.2137 mi

7. Millimeters ➝ Centimeters

Formula:

        cm = mm ÷ 10
      

Example: 45 mm ÷ 10 = 4.5 cm

8. Centimeters ➝ Millimeters

Formula:

        mm = cm × 10
      

Example: 7 cm × 10 = 70 mm

How to Use This Converter

Enter the value you want to convert.
Select the unit you’re converting from (e.g. inches).
Select the unit you’re converting A (e.g. centimeters).
Get the answer instantly, plus the formula above for learning or homework.

✅ Tip: Use the top navigation to find other calculators such as height conversions.

More Height & Length Tools

Jump straight to our most-used calculators. Each tool shows the exact formula used so you can verify your result or use it in homework, sports, or body measurement projects.

	Height Converter Option 1: Feet & Inches ➝ cm / m Convert heights from imperial to metric and back again – perfect for doctor visits, sports, and clothing sizes. cm = (ft × 30.48) + (in × 2.54) m = cm ÷ 100 Open calculator →
	Altezze delle celebrità Option 2: Celebrity Height Conversions Curious how tall your favorite actor, musician, or athlete is in centimeters? Browse the full list and compare. cm = in × 2.54 in = cm ÷ 2.54 View celebrity list →
	Average Heights Option 3: Average Height Converters Compare average heights for different ages, genders, and regions – already converted for you. avg height (cm) = avg height (in) × 2.54 percentile checks often use cm → in → ft + in Browse averages →
	Tallest People Option 4: Tallest Height Conversions See the world’s tallest recorded heights and convert them to your preferred unit in one click. cm = in × 2.54 ft + in = cm ÷ 30.48 (then separate ft & remainder) Explore tallest →