CM to Inches Converter
Gamitin ang CM to Inches Converter na ito para makuha ang mabilis at tumpak na resulta.
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- Ilagay ang Centimeters
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How to Convert Centimeters to Inches
The exact conversion factor between centimeters and inches is defined as:
1 inch = 2.54 centimeters (exact, by international agreement since 1959)
Therefore:
- cm to inches: inches = centimeters ÷ 2.54
- inches to cm: centimeters = inches × 2.54
Examples:
- 175 cm ÷ 2.54 = 68.90 inches (5 feet 8.9 inches)
- 30 cm ÷ 2.54 = 11.81 inches
- 5 inches × 2.54 = 12.7 cm
- 12 inches × 2.54 = 30.48 cm (exactly 1 foot)
The conversion is exact — 2.54 cm per inch is defined, not measured. This means there is no rounding error in the base conversion, only in how many decimal places you choose to express the result.
CM to Inches Reference Chart
Common conversions for quick reference:
| Centimeters | Inches (decimal) | Feet and Inches |
|---|---|---|
| 1 cm | 0.39 in | — |
| 5 cm | 1.97 in | — |
| 10 cm | 3.94 in | — |
| 15 cm | 5.91 in | — |
| 20 cm | 7.87 in | — |
| 25 cm | 9.84 in | — |
| 30 cm | 11.81 in | — |
| 50 cm | 19.69 in | 1 ft 7.69 in |
| 100 cm (1 m) | 39.37 in | 3 ft 3.37 in |
| 150 cm | 59.06 in | 4 ft 11.06 in |
| 160 cm | 62.99 in | 5 ft 2.99 in |
| 170 cm | 66.93 in | 5 ft 6.93 in |
| 175 cm | 68.90 in | 5 ft 8.90 in |
| 180 cm | 70.87 in | 5 ft 10.87 in |
| 185 cm | 72.83 in | 6 ft 0.83 in |
| 190 cm | 74.80 in | 6 ft 2.80 in |
| 200 cm (2 m) | 78.74 in | 6 ft 6.74 in |
Height Conversion: Feet and Inches to Centimeters
Height is commonly expressed in feet and inches in the US, UK, and a few other countries, but in centimeters in most of the world. Here is how to convert:
Feet + Inches → Centimeters:
Total inches = (feet × 12) + inches
Centimeters = total inches × 2.54
Example: 5 feet 10 inches:
(5 × 12) + 10 = 70 total inches
70 × 2.54 = 177.8 cm
| Feet & Inches | Total Inches | Centimeters |
|---|---|---|
| 5'0" | 60" | 152.4 cm |
| 5'2" | 62" | 157.5 cm |
| 5'4" | 64" | 162.6 cm |
| 5'6" | 66" | 167.6 cm |
| 5'7" | 67" | 170.2 cm |
| 5'9" | 69" | 175.3 cm |
| 5'10" | 70" | 177.8 cm |
| 6'0" | 72" | 182.9 cm |
| 6'2" | 74" | 187.9 cm |
| 6'4" | 76" | 193.0 cm |
Metric vs Imperial: Why Two Systems Exist
Only three countries officially use the imperial system as their primary measurement system: the United States, Liberia, and Myanmar. Every other country uses the metric system (SI — International System of Units).
The metric system was developed in France in the 1790s during the French Revolution as a rational, base-10 system. Britain officially converted to metric in 1965 but still uses miles on road signs and pints in pubs. The US has maintained the imperial system largely due to cultural inertia and the cost of conversion.
Key differences in daily use:
| Measurement | Metric (most of world) | Imperial (US) |
|---|---|---|
| Length (short) | centimeters, meters | inches, feet |
| Length (long) | kilometers | miles |
| Mass | grams, kilograms | ounces, pounds |
| Volume | milliliters, liters | fluid ounces, gallons |
| Temperature | Celsius | Fahrenheit |
The cost of the imperial-metric divide is real: NASA's Mars Climate Orbiter (1999) was destroyed because one team used metric units and another used imperial, causing a navigational miscalculation that resulted in the $327 million spacecraft crashing into Mars.
Common Length Conversions Beyond CM to Inches
Centimeters and inches are the most common conversion pair, but here are other frequently needed length conversions:
| Convert | Multiply By | Example |
|---|---|---|
| cm → mm | × 10 | 5 cm = 50 mm |
| mm → cm | ÷ 10 | 25 mm = 2.5 cm |
| meters → feet | × 3.28084 | 2 m = 6.56 ft |
| feet → meters | × 0.3048 | 10 ft = 3.048 m |
| km → miles | × 0.621371 | 10 km = 6.21 mi |
| miles → km | × 1.60934 | 5 mi = 8.05 km |
| inches → mm | × 25.4 | 1 in = 25.4 mm |
| yards → meters | × 0.9144 | 100 yds = 91.44 m |
Quick mental math trick for km/miles: Multiply km by 0.6 for a quick miles approximation. 10 km × 0.6 = 6 miles (actual: 6.21). Multiply miles by 1.6 to get km. 5 miles × 1.6 = 8 km (actual: 8.05).
CM to Inches in Practical Contexts
Here are common situations where cm-to-inch conversion is needed:
- Clothing and shoes: European sizes use cm (shoe size) or bust/waist/hip in cm; US clothing uses inches. A European size 40 women's dress corresponds to a bust of approximately 84–87 cm = 33–34 inches.
- Screen sizes: TV and monitor sizes are measured diagonally in inches worldwide, but product dimensions are often in cm. A 55-inch TV has a screen diagonal of 55 × 2.54 = 139.7 cm.
- Furniture and rooms: IKEA (Swedish) lists dimensions in cm; many US floor plans use feet and inches. A 200 cm table is 78.74 inches = 6 ft 6.74 in.
- Medical measurements: Height in medical records uses cm in most countries; a patient height of 172 cm = 5 ft 7.72 in. Newborn length is measured in cm worldwide.
- Sports: Olympic athletics uses metric (shot put, long jump, pole vault are measured in meters and centimeters). US football field is 100 yards = 91.44 meters.
- 3D printing and manufacturing: Designs are typically in mm; 1 inch = 25.4 mm exactly. A standard US outlet is 3.5 × 5.5 cm = 1.38 × 2.17 inches.
Frequently Asked Questions
How many centimeters are in an inch?
Exactly 2.54 centimeters equal one inch. This is a defined (not measured) conversion established by international agreement in 1959. So 1 inch = 2.54 cm, 2 inches = 5.08 cm, 12 inches (1 foot) = 30.48 cm.
How do I convert 5 feet 7 inches to centimeters?
Convert to total inches first: (5 × 12) + 7 = 67 inches. Then multiply by 2.54: 67 × 2.54 = 170.18 cm. So 5'7" = approximately 170.2 cm.
What is 170 cm in feet and inches?
170 ÷ 2.54 = 66.93 inches total. 66 ÷ 12 = 5 feet with 6.93 inches remaining. So 170 cm = 5 feet 6.93 inches (usually rounded to 5'7").
What is 6 feet in centimeters?
6 feet = 72 inches. 72 × 2.54 = 182.88 cm. So 6 feet exactly equals 182.88 cm (often rounded to 183 cm).
What is the difference between a centimeter and an inch?
An inch is larger than a centimeter: 1 inch = 2.54 cm. Put another way, 1 cm ≈ 0.394 inches. A centimeter is part of the metric system (SI); an inch is part of the imperial system used primarily in the US.
How do I convert cm to feet (not inches)?
Divide by 30.48 to get feet directly (since 1 foot = 30.48 cm). Example: 180 cm ÷ 30.48 = 5.906 feet = 5 feet 10.87 inches. Alternatively, first convert to inches (÷2.54), then divide by 12 to get feet with the remainder in inches.
Why does the US still use inches instead of centimeters?
The US has maintained the imperial system largely due to cultural inertia, the cost of converting infrastructure, and public resistance. Congress passed the Metric Conversion Act in 1975, making metric conversion voluntary — but industry adoption has been inconsistent. Science, medicine, and the military in the US use metric, while everyday life uses imperial.
What is 1 meter in feet and inches?
1 meter = 100 cm = 39.37 inches = 3 feet 3.37 inches. A quick approximation: 1 meter ≈ 3 feet 3 inches. For running: a 1500m race is approximately 0.932 miles (just under a mile), and 1600m ≈ 1 mile.
💡 Alam mo ba?
- An inch was historically defined as the width of a man's thumb — or three barleycorns placed end to end.
- The metric system was introduced during the French Revolution in 1795 to replace hundreds of inconsistent local measurement units.
- The United States, Liberia, and Myanmar are the only three countries that have not officially adopted the International System of Units (SI/metric).
Huling na-update: March 2026