Unit Conversion & Measurement

Length Converter

Convert between metric, imperial, and nautical length units with consistent, standards-based baselines.

Enter the length you have, choose the source unit, and select the target unit to get a clean conversion plus a meters baseline. Use the output to align spec sheets, drawings, navigation notes, or inventory descriptions without manual math.

Your Input and Get Results

Feet + inches input is used only when From unit is ft+in.

Results

Converted length -

Enter values and calculate to see the output.

Converted length
-
Target unit output
Meters baseline
-
Normalized meters
Conversion factor
-
Per unit ratio

Length split chart

Converted share Base share

Results table

Metric Value
Enter values and calculate to see the output.

Precautionary guidance

  • Keep the source unit consistent with the spec or drawing.
  • Use ft+in only for inputs that include both values.
  • Maintain precision until final reporting or machining.
  • Document conversions alongside revision notes.
  • Confirm nautical vs statute miles for navigation.
  • Recalculate if units change in upstream documents.

Keep conversions attached to spec sheets and routing notes.

How to use this calculator

Enter The Value

Start with the length from your plan or measurement log. If the value is in feet and inches, use the ft+in input field.

Select Units

Pick the source unit and target unit. The calculator converts through meters to ensure accuracy.

Share Results

Export the table or PDF to keep conversions aligned across procurement, engineering, and field teams.