How do I convert Inch (in) to Meter (m)?

1 in equals 0.0254 m using SI-based conversion and precise factors.

What is the formula to convert Inch (in) to Meter (m)?

This is a linear unit conversion using a constant factor between units.

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Use the shareable URL pattern: /convert/in-to-m/1

Category: Length

Value From To Precision

0.0254 m

1 in = 0.0254 m

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Length and applying exact factors where applicable.

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Length measures distance. SI base is the meter; many legacy units survive in trade and navigation.

Inch (in)

Imperial/US customary unit of length; exactly 25.4 mm.

History: Fixed at exactly 25.4 mm by international agreement in 1959.

Meter (m)

Base unit of length in the SI. Defined via the speed of light in vacuum.

History: Historically tied to Earth's meridian (18th c.); redefined in 1983 using c = 299,792,458 m/s.