CM to inches
Read metric product sizes, screens and furniture dimensions in inches.
Category
Everyday Converters
Everyday converters: length (cm/inch), weight (kg/lb), volume (cups/ml), temperature (C/F). Built for cooking, shopping, travel and quick household checks.
Last updated: June 2026
Everyday conversions almost always come from the gap between the US customary system and the metric system most of the world uses. You meet it when a recipe lists ounces and cups, when a TV or a piece of furniture is sold by the inch, when an airline states a luggage limit in kilograms, or when you buy clothes and shoes sized to a different standard. The tools below give the exact number plus enough context to act on it, so you are not guessing whether something will fit, weigh too much, or come out right.
The reliable habit with everyday conversions is to convert once, at the start, then work in the unit your tape measure, scale or oven actually shows. The common mistake is not the arithmetic but mixing the two systems halfway through a task.
Tools in this section
Inches to CM
Turn a US size in inches into centimeters for metric tools and spaces.
KG to lbs
Body weight, luggage and parcel weights from kilograms to pounds.
Lbs to KG
US product and baggage weights converted to metric kilograms.
Shoe size converter
Match US, UK and EU shoe sizes before buying footwear abroad.
Common US to metric conversions at a glance
Most everyday conversion needs fall into four categories: cooking measurements, body and product weight, physical dimensions, and temperature. The table below covers the values that come up most often.
| Category | US unit | Metric value | Practical note |
|---|---|---|---|
| Cooking (volume) | 1 cup | 237 ml | Half a cup = 118 ml |
| Cooking (volume) | 1 fluid ounce | 29.6 ml | Shot glass is typically 44 ml (1.5 oz) |
| Cooking (weight) | 1 ounce (oz) | 28.35 g | 16 oz = 1 lb = 453.6 g |
| Body / luggage | 1 pound (lb) | 0.454 kg | 23 kg checked bag limit = 50.7 lb |
| Height | 1 inch | 2.54 cm | 6 ft = 182.9 cm; 5 ft 9 = 175.3 cm |
| Temperature | 32 F | 0 C | Freezing point of water |
| Temperature | 98.6 F | 37 C | Normal body temperature |
| Temperature | 212 F | 100 C | Boiling point of water |
Where the two systems create practical problems
Cooking is the most common collision point. US recipes measure liquid by volume (cups, tablespoons) and dry ingredients loosely by volume too, while European and metric recipes use weight. For baking, 1 cup of plain flour is about 120 to 130 g depending on how it is packed, so weight is more consistent. A kitchen scale removes the ambiguity entirely.
Clothing and shoe sizes are not simple linear scales. EU shoe sizes use Paris points (2/3 cm increments starting from a reference length), US men's and women's sizes use different reference lengths, and UK sizing differs from both. The only reliable approach is the brand's specific size chart. The shoe size converter on this site lines up all three systems for comparison.
Luggage limits are in kilograms at most international airlines, which surprises US travellers accustomed to pounds. The shortcut of "double and add a bit" (1 kg is about 2.2 lb) works fine for a quick check: a 23 kg limit is about 50 lb. When the bag is near the limit, use the exact converter.
Screen and TV sizes are always stated in inches even in metric countries. A 55-inch TV is 139.7 cm on the diagonal. The inch to cm converter is the quickest way to check whether a new screen fits a specific space or furniture gap.
Frequently Asked Questions
How do I convert a US recipe that uses cups and ounces?
Measure in the unit you have, then convert: 1 US cup is about 237 ml and 1 ounce is about 28 grams. For dry ingredients, weight is more reliable than volume, because a cup of flour and a cup of sugar do not weigh the same.
What is my US shoe size in EU sizing?
There is no single formula, because the scales use different reference lengths. As a rough guide a US men's 9 is about EU 42 and a US women's 8 is about EU 39, but always check the brand's own chart. The shoe size converter lines up US, UK and EU side by side.
Why do clothing and shoe sizes differ between the US and Europe?
Each region standardised its sizing separately, so the same garment carries different numbers. Converting the underlying measurement, such as a waist in inches to centimeters, is more reliable than trusting the size label across borders.
Is 1 kilogram really about 2 pounds?
Close: 1 kg is 2.205 lb. The "times two" shortcut is fine for a rough idea but runs about 10 percent low, so a 23 kg bag is 50.7 lb, not 46. Use the kg to lbs tool when a luggage limit is tight.
What is the quickest way to convert cm to inches in my head?
Divide centimeters by 2.5 for a close estimate, since 1 inch is 2.54 cm. So 30 cm is about 12 inches. For anything you are cutting or fitting, use the converter for the exact value.
How do I convert US cup measurements to grams for baking?
There is no single answer because density varies. A cup of all-purpose flour is about 125 g, a cup of granulated sugar about 200 g, a cup of butter about 227 g, and a cup of water about 237 g. For accurate baking, weigh ingredients rather than relying on volume-to-weight conversions.
What is 5 foot 10 in centimetres?
5 feet 10 inches is 177.8 cm. Convert by multiplying total inches by 2.54: (5 x 12 + 10) = 70 inches; 70 x 2.54 = 177.8 cm. The inches to cm converter handles this in one step.
How do I convert Fahrenheit oven temperatures to Celsius?
Subtract 32 then multiply by 5/9. Common oven temperatures: 325 F = 163 C, 350 F = 177 C, 375 F = 190 C, 400 F = 204 C. The C to F converter covers the full range in either direction.