Unit Converters
Calcowa's unit converters handle the everyday conversions in one place: length, weight, volume, and temperature. Each one is a full multi-unit converter, not a single pair, so you type a value once and every related unit updates live. They cover metric and imperial together, show the exact factor or formula, and include a reference chart. Whether it's cm to inches, kg to lbs, ml to oz, or Celsius to Fahrenheit, there's a tool below for it, free and ready in your browser.
All converters
One tool per measurement, both systems
Each converter bridges metric and imperial, so you don't hunt for a separate page per direction. The length converter turns cm to inches and feet to meters; the weight converter handles kg to lbs and grams to ounces; the volume converter covers ml to oz and cups to milliliters; and the temperature converter does Celsius to Fahrenheit and Kelvin.
Because each one shows every unit at once, a single entry answers the whole family. Type 70 kg and you'll see pounds, stone, and grams together, no second lookup needed.
- 1 kg = 2.2046 lb
- 1 in = 2.54 cm
- 1 cup = 236.6 ml
- 0 °C = 32 °F
- 1 mi = 1.609 km
Popular conversions, covered
The conversions people search for most all live inside these four tools. Kg to lbs and pounds to kg sit in the weight converter. Inches to cm, feet to cm, and km to miles are in the length converter. Ml to oz and liters to gallons are in the volume converter, and Celsius to Fahrenheit is in the temperature converter.
So you don't need to remember which page does what; open the converter for your measurement and the exact pair is right there, with a chart for the values you reach for often.
Why a multi-unit converter helps
A single-pair converter answers one question and that's it. A multi-unit converter answers the whole set: enter a value once and read it in every unit, which is faster when you're comparing or you aren't sure which unit you'll need. Calcowa's converters work that way, and they show the factor or formula so the result isn't a black box. That's handy for homework, where seeing the method matters, and for cooking or travel, where you just want the number quickly.
Each tool keeps the interface simple: a value, a couple of dropdowns, and an all-units list. There's no sign-up and nothing to install, so the converter you need is always a click away.
Unit converter questions
A unit converter changes a measurement from one unit into another, like centimeters into inches or kilograms into pounds. Calcowa's converters each handle a whole family of units at once, so you type a value in any one and the rest update live. They show the factor or formula too, so you'll understand the conversion rather than just copy a number. Every one is free and runs in your browser.
Pick by what you're measuring. For distance and height, use the length converter; for mass, the weight converter; for cooking and liquids, the volume converter; and for heat, the temperature converter. Each one covers metric and imperial units together, so you don't need a separate tool for each direction. The grid above sorts them by type.
Yes on both counts. They're free with no sign-up, and they use the exact internationally defined factors, so a kilogram is precisely 2.20462262 pounds and an inch is exactly 2.54 cm. The displayed result is rounded for readability, but the math underneath is full precision. Your values stay in your browser, since nothing is sent anywhere.
Yes, that's the whole point. Each tool bridges the two systems, so you can go from feet to meters, pounds to kilograms, or Celsius to Fahrenheit and straight back. Metric units scale by tens, while imperial units use mixed steps like 12 inches to a foot, and the converters keep those factors straight for you.
Yes. The volume converter covers cups, tablespoons, teaspoons, fluid ounces, milliliters, and liters, which are the everyday kitchen units. It also explains grams to cups, which depends on the ingredient, with a density table for common ones. Between that and the weight converter, you've got most recipe conversions covered.
The converters round the answer to a sensible number of decimals so it's easy to read, but they calculate with full precision first. So 1 liter shows as 33.81 fluid ounces, not 33.814022..., even though the exact value is used in the math. For most everyday needs the rounded figure is all you'll want.
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