Free · Length conversions

Centimeter, Inch & Metric Length Table

Convert centimeters to inches, feet, yards and metric scales, including compound feet and inches.

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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

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Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

127 cm equals 50 inches, 1.27 m or 1,270 mm. To convert centimeters to inches, divide by exactly 2.54.

Inches = centimeters ÷ 2.54; meters = centimeters ÷ 100

Worked example

Enter these known values and leave the other values blank.

Centimeters
127 cm
Inches
50 in
Feet
4.167 ft
Yards
1.389 yd
Miles
0.0007891 mi
Other imperial units
4:2 ft / in
Millimeters
1270 mm
Meters
1.27 m
Kilometers
0.00127 km
Other metric units
1270000 μm

Assumptions and limitations

  • International units use exactly 25.4 mm per inch, 0.3048 m per foot, 0.9144 m per yard and 1,609.344 m per statute mile. A nautical mile is exactly 1,852 m.
  • Every field describes the same length. Zero and signed values are supported for directed measurements; a negative result does not describe a physical size. Display rounding does not increase the precision of the original measurement.
  • In a compound feet/inches field, use a colon: 1:6 means one foot six inches. Decimal 1.6 feet is one foot 7.2 inches. Read the selected unit when editing a flexible field.
  • The optional legacy US survey foot is exactly 1200/3937 m. It differs from the international foot; use it only to interpret data explicitly expressed in that legacy unit.
  • The optional copper-foil scale retains the nominal convention 1 oz/ft² = 35 µm of thickness. It is not a fluid ounce, an exact mass-to-length identity, or a guarantee of finished PCB copper thickness.

Common questions

How do I convert a height written in feet and inches?

Use the flexible customary field with the ft/in selection. For example, 5:8 means 68 inches and converts to 172.72 cm.

Can I work backward from a result?

Yes. Enter the known length in any editable field to update the other representations. Check the selected unit first, especially in the flexible comparison fields.

Why does changing a unit change the number?

The length stays the same while the size of the unit changes. A longer unit needs a smaller number of units to represent the same distance.

References

The optional legacy US survey foot uses exactly 1200/3937 meters, replacing the rounded reference factor. Ordinary international feet remain exactly 0.3048 meters.

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