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Universal Measurement Converter
From Quantum Physics to Baking Recipes
Units of measurement define how we interact with the world. Whether you are an engineer calculating pressure loads, a developer managing server storage, or a traveler converting miles to kilometers, accuracy matters. Our Universal Unit Converter supports 9 essential categories with high-precision measurements.
Explore the Categories
Essential for IT pros. Convert between Bits, Bytes, KB, MB, GB, TB, and even Petabytes. We use the binary standard (1024) used by Windows.
Vital for automotive and industrial work. Convert PSI (pounds per square inch) to Bar, Pascal, or Atmospheres.
For physics and nutrition. Swap between Joules, Calories (kcal), Kilowatt-hours (energy bills), and Electronvolts.
From nanoseconds for chips to years for history. Includes weeks, days, and milliseconds.
Science and weather. Supports Celsius, Fahrenheit, Kelvin, and the engineering Rankine scale.
Cooking and shipping. Convert grams to ounces, kg to lbs, or metric tons to stone.
Search Tip
Don't know which category a unit belongs to? Use the Search Bar at the top right of the tool.
- • Type "psi" → Automatically switches to Pressure
- • Type "acre" → Automatically switches to Area
- • Type "byte" → Automatically switches to Data
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
Multiply by 1.8 (or 9/5) and add 32. Formula: °F = (°C × 1.8) + 32. Example: 20°C × 1.8 = 36, + 32 = 68°F.
How many Kilobytes are in a Megabyte?
In standard decimal (SI) units, 1 MB = 1,000 KB. In binary (IEC) units often used in computing, 1 MB = 1,024 KB. Our converter follows the binary standard (1024) which is most common in operating systems.
What is the difference between a Calorie and a Kilocalorie?
In physics, a 'calorie' (lowercase c) heats 1g of water. In nutrition, a 'Calorie' (capital C) is actually a kilocalorie (kcal), which heats 1kg of water. 1 Food Calorie = 1,000 physics calories.
How many feet are in a mile?
There are 5,280 feet in one statute mile. This comes from historical English definitions involving furlongs and chains.
What is PSI?
PSI stands for Pounds per Square Inch. It is a unit of pressure commonly used for tire pressure and industrial applications. 14.7 PSI is roughly equal to 1 Atmosphere (standard air pressure at sea level).
How do I convert meters to feet?
Multiply the meters by approximately 3.28084. Formula: ft = m × 3.281. Example: 2 meters ≈ 6.56 feet.
What is Absolute Zero?
Absolute Zero is the lowest theoretical temperature possible, where molecular motion effectively stops. It is 0 Kelvin, or -273.15°C, or -459.67°F.
Why are there US and UK gallons?
The US Gallon (approx 3.79L) is based on the older 'wine gallon'. The UK Imperial Gallon (approx 4.55L) is based on the 'ale gallon'. Always check which system your recipe or equipment uses.
How many Joules in a kWh?
One kilowatt-hour (kWh) equals 3.6 million Joules (3.6 MJ). This is because 1 Watt = 1 Joule/second, and there are 3,600 seconds in an hour.
What is a hectare?
A hectare is a metric unit of area equal to 10,000 square meters (100m × 100m). It is approximately 2.47 acres.
How many pounds in a kilogram?
There are approximately 2.20462 pounds in one kilogram. To convert roughly, multiply kg by 2.2.
What is a Light Year?
A Light Year is a unit of LENGTH, not time. It is the distance light travels in one vacuum year, approximately 9.46 trillion kilometers.
How to convert square feet to square meters?
Divide the square feet by approximately 10.764. Example: 100 sq ft ≈ 9.29 sq meters.
What is a Bar (pressure)?
A Bar is a metric unit of pressure defined as exactly 100,000 Pascals (100 kPa). It is slightly less than the average atmospheric pressure on Earth at sea level (1.013 bar).
How many seconds in a year?
In a standard 365-day year, there are 31,536,000 seconds. In a leap year (366 days), there are 31,622,400 seconds.