Length Converter

Enter one non-negative length and compare eight metric and customary unit results. Convert metres, kilometres, centimetres, millimetres, miles, yards, feet or inches.

Compare a length in all eight supported units without choosing a separate destination. The source selector determines how the entered number is interpreted; all output cards update together. Feet are decimal feet, not a combined feet-and-inches field.

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1Enter details
2View result

Value

From Unit

1.0000Meters (m)

0.0010Kilometers (km)

100.0000Centimeters (cm)

1000.0000Millimeters (mm)

0.0006Miles (mi)

1.0936Yards (yd)

3.2808Feet (ft)

39.3701Inches (in)

Your input stays on this device for this operation. We don’t upload or store it.

About Length Converter

Eight simultaneous results

Shows m, km, cm, mm, mi, yd, ft and in.

Fixed unit factors

Uses 0.3048 metres per foot and 0.0254 metres per inch.

Live source selection

Changing From Unit recomputes every output from the same entered value.

How to use Length Converter

1
Enter the measured length
Use Value for a non-negative numeric length.
2
Set From Unit
Choose the source abbreviation, such as ft for feet or m for metres.
3
Read the output cards
Find the unit you need in the eight-card result. Each value is displayed to four decimal places.

Formats and practical limits

Input: a non-negative numeric length and one of eight source units. Output: eight labelled numeric results at four decimal places.

No mixed-unit notation, negative distances, measurement uncertainty or surveying correction.
Four-decimal display rounding is not a promise of measurement accuracy or arbitrary precision.

Practical example

Enter 1 and choose ft. The metre card shows 0.3048 and the inch card shows 12.0000.

Frequently Asked Questions

3 answers

Can I enter 5 feet 8 inches?

There is no mixed-unit field. Enter 68 inches, or a decimal feet value, and select that source unit.

Why does a very small result show zero?

Every card uses four decimal places. A value smaller than that display resolution can round to 0.0000.

Can it convert an area in square feet?

No. Length and area use different factors; use Area Converter for square units.

About Length Converter

Eight simultaneous results

Fixed unit factors

Live source selection

How to use Length Converter

Enter the measured length

Set From Unit

Read the output cards

Formats and practical limits

Practical example

Further reading

Frequently Asked Questions

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