Length Converter – Fast & Accurate Unit Conversion Tool

Length Converter (Metric • Imperial/US • Others)

Enter a value in any field, click Calculate, and all other fields update. Changing a dropdown unit converts only that field.

Metric

Length in millimeters (mm)

Length in centimeters (cm)

Length in meters (m)

Length in kilometers (km)

Length in other metric units

Imperial / US

Length in inches (in)

Length in feet (ft)

Length in yards (yd)

Length in miles (mi)

Length in other imperial units

Others

Length in nautical miles (nmi)

Length in Sun radii (R☉)

Length in light years (ly)

Length in other units

Start by entering a value in any field.

Step-by-step derivation

Enter a value, then click Calculate.

References

Convert any unit to meters, then to all others: value_B = value_A × factor(A→m) ÷ factor(B→m).
in = 0.0254 m; ft = 0.3048 m; yd = 0.9144 m; mi = 1609.344 m.
nmi = 1852 m; AU = 149,597,870,700 m; ly ≈ 9.460730472×10^15 m; pc ≈ 3.085677581×10^16 m.
R⊕ ≈ 6,371,000 m; R☉ ≈ 695,700,000 m; US survey foot = 1200/3937 m.

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