MM to CM Converter (All Length Units)

1. Core Idea

1 cm = 10 mm, so to get centimeters divide millimeters by 10. Decimal shift one place left.

2. Formula

3. Quick Values

• 1 mm → 0.1 cm
• 5 mm → 0.5 cm
• 12 mm → 1.2 cm
• 25 mm → 2.5 cm
• 30 mm → 3.0 cm
• 120 mm → 12.0 cm

4. 3-Step Example

Convert 275 mm to cm

1. Formula: cm = mm ÷ 10
2. Insert: 275 ÷ 10
3. = 27.5 cm

5. Uses

Product specs, technical drawings, school worksheets, 3D printing dimensions, small hardware sizing.

6. Accuracy & Tips

• Just move decimal left 1 place (e.g., 48 mm → 4.8 cm).
• Reverse: move decimal right 1 place.
• Use one decimal for rough items; two for precision parts.
• Avoid rounding until final step for stacked dimensions.

7. More Examples

8. FAQ