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Online Ruler

Length converter

Feet to centimeters.

Convert a decimal-foot length to centimeters and verify how the fractional foot relates to inches.

5.5 ft = 167.64 cm
Nearest inch fraction≈ 66 in
Fraction rounding difference-0 mm
Metric length1,676.4 mm
Feet and inches5 ft 6 in

The marker shows the fractional part of one inch. This diagram illustrates tick positions; it is not a physical-size ruler.

Reverse conversion ↔Measure on screen ↗

Conversion formula

centimeters = feet × 30.48

Enter the source length above. The result updates immediately. These calculations use exact length definitions: 1 m = 100 cm = 1000 mm, 1 in = 25.4 mm, and 1 ft = 12 in. Only the displayed answer and fractional ruler mark are rounded. The feet-and-inches output splits a length into whole feet and remaining inches; decimal feet do not encode an inch count.

Worked example

5.5 ft equals 167.64 cm. Half a foot is six inches, so this value also means 5 ft 6 in. In contrast, 5 ft 5 in is 5 + 5/12 feet, approximately 5.416667 ft, and equals 165.1 cm.

Conversion table: ft → cm

Select a source value to load it into the calculator. Decimal results are displayed to at most six places; inch fractions in this table are rounded to 1/16 inch.

Feet → Centimeters
Feet (ft)Centimeters (cm)Nearest inch fraction
15.24≈ 6 in
30.48≈ 12 in
60.96≈ 24 in
91.44≈ 36 in
121.92≈ 48 in
152.4≈ 60 in
167.64≈ 66 in
182.88≈ 72 in
198.12≈ 78 in
213.36≈ 84 in
243.84≈ 96 in
304.8≈ 120 in

When to use this conversion

Use this for heights, furnishing dimensions, and measurements supplied in decimal feet. Enter feet as a decimal or a fraction of a foot, not a feet-and-inches string. If your source says 5 ft 6 in, enter 5.5. The tool displays a separate feet-and-inches result to help you check the interpretation.

One international foot is exactly 30.48 cm. Historical survey-foot definitions are not used here. A numerical conversion cannot determine whether a quoted dimension includes packaging, mounting brackets, or a product’s usable interior space.

Exact conversion versus a ruler reading

The unit relationship is exact, but a measured object may have uncertainty. At 1/16 inch, the maximum rounding difference is half a tick: 1/32 inch, or 0.79375 mm. The calculator shows the actual rounding difference for your value. Use a finer division only if the source measurement and physical instrument support that precision.

Next steps

Numerical conversion needs no display calibration. Comparing a physical object against your screen does. Use the ruler for small objects, a verified paper ruler away from your display, or an appropriate calibrated instrument for safety-critical measurements.

Related converters

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Reference: NIST unit conversion factors. Calculations use the international foot, not historical survey-foot units. Fractions are explicitly approximate. NIST ↗