Unit Converter
Quickly convert common measurements for everyday use.
Choose a conversion category, enter a value, and convert between common units.
Conversion Result
Choose your units above and convert your measurement.
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About the Creator
MyCruncher — Founded by Bobby Dues
MyCruncher provides free online calculators designed to make everyday calculations easier to understand and use.
Meet Bobby Dues →Free Unit Converter – Convert Length, Weight, Volume and Temperature
Need to convert feet to inches, pounds to kilograms, gallons to liters, or Fahrenheit to Celsius? The free MyCruncher Unit Converter helps you calculate common measurement conversions quickly and easily.
Whether you’re working on a home improvement project, following a recipe, measuring materials, studying math, or comparing measurements, this conversion calculator makes everyday unit conversions easier.
Choose a measurement category, enter your value, select the starting and destination units, and calculate the converted amount.
You can also use Swap Units to reverse the conversion direction without manually reselecting both units.
How to Use the Unit Converter
The MyCruncher Unit Converter has a simple conversion process.
- Select a conversion category. Choose the measurement type you want to convert.
- Enter your value. Type the numerical measurement into the Value field.
- Select the From unit. Choose the original measurement unit.
- Select the To unit. Choose the destination measurement unit.
- Click Convert Units. The converter displays the calculated result.
- Review the conversion note. Check the displayed relationship between the selected units.
- Use Swap Units. Reverse the direction when you want the opposite conversion.
Results may be rounded for easier reading. For high-precision work, verify the required number of decimal places.
How Does Unit Conversion Work?
Unit conversion changes a measurement from one unit into an equivalent measurement using another unit.
For most length, mass, and volume conversions, multiply or divide by a known conversion factor.
For example, one foot equals 12 inches.
To convert five feet into inches:
The numerical value changes, but the physical length remains the same.
Feet to Inches Conversion Example
Example: Suppose you’re measuring a piece of lumber that is 8 feet long.
Step 1: Identify the Starting Measurement
Step 2: Identify the Conversion Factor
Each foot contains 12 inches.
Step 3: Multiply
Step 4: Reverse the Conversion
To convert inches to feet, divide by 12.
This confirms the measurement is equivalent in either unit.
Feet to Inches Conversion Chart
The following table shows common feet and inches conversions.
| Feet | Inches |
|---|---|
| 1 | 12 |
| 2 | 24 |
| 3 | 36 |
| 4 | 48 |
| 5 | 60 |
| 6 | 72 |
| 8 | 96 |
| 10 | 120 |
| 12 | 144 |
How to Convert Inches to Centimeters
Inches are commonly used for measurements in the United States.
Centimeters are part of the metric system.
One international inch equals exactly 2.54 centimeters.
Inches to Centimeters Example
Suppose a measurement is 10 inches.
Common Length Conversion Chart
| Measurement | Equivalent |
|---|---|
| 1 Foot | 12 Inches |
| 1 Yard | 3 Feet |
| 1 Mile | 5,280 Feet |
| 1 Inch | 2.54 Centimeters |
| 1 Foot | 0.3048 Meters |
| 1 Meter | 100 Centimeters |
| 1 Kilometer | 1,000 Meters |
| 1 Mile | 1.609344 Kilometers |
How to Convert Miles to Kilometers
Miles are often used for travel distances in the United States.
Kilometers are widely used for road distances in other countries.
Miles to Kilometers Example
Suppose a road trip covers 100 miles.
Miles to Kilometers Chart
| Miles | Kilometers |
|---|---|
| 1 | 1.61 |
| 5 | 8.05 |
| 10 | 16.09 |
| 25 | 40.23 |
| 50 | 80.47 |
| 100 | 160.93 |
| 250 | 402.34 |
| 500 | 804.67 |
How to Convert Pounds to Kilograms
Pounds and kilograms are common units for measuring body weight, packages, and other masses.
One avoirdupois pound equals exactly 0.45359237 kilograms.
Pounds to Kilograms Example
Suppose an item weighs 150 pounds.
Pounds to Kilograms Conversion Chart
| Pounds | Kilograms |
|---|---|
| 1 | 0.45 |
| 5 | 2.27 |
| 10 | 4.54 |
| 25 | 11.34 |
| 50 | 22.68 |
| 100 | 45.36 |
| 150 | 68.04 |
| 200 | 90.72 |
How to Convert Ounces to Pounds
In the standard US avoirdupois weight system, one pound contains 16 ounces.
For example, 48 ounces equals three pounds.
Remember that weight ounces and US fluid ounces measure different quantities.
Common Weight Conversion Chart
| Measurement | Equivalent |
|---|---|
| 1 Pound | 16 Ounces |
| 1 Pound | 0.45359237 kg |
| 1 Kilogram | 1,000 Grams |
| 1 Kilogram | Approx. 2.20462 lb |
| 1 Gram | 1,000 Milligrams |
| 1 Ounce (Weight) | Approx. 28.3495 g |
How to Convert Gallons to Liters
Liquid volume measurements are useful for cooking, fuel, water, and household projects.
One US liquid gallon equals exactly 3.785411784 liters.
Gallons to Liters Example
Suppose you want to convert 5 US gallons.
US gallons and Imperial gallons are different units. Always select the appropriate standard.
Gallons to Liters Conversion Chart
| US Gallons | Liters |
|---|---|
| 1 | 3.79 |
| 2 | 7.57 |
| 3 | 11.36 |
| 5 | 18.93 |
| 10 | 37.85 |
| 15 | 56.78 |
| 20 | 75.71 |
Common US Liquid Volume Conversions
The following relationships refer to US customary liquid measures.
| Measurement | Equivalent |
|---|---|
| 1 US Gallon | 4 US Quarts |
| 1 US Quart | 2 US Pints |
| 1 US Pint | 2 US Cups |
| 1 US Cup | 8 US Fluid Ounces |
| 1 US Tablespoon | 3 US Teaspoons |
| 1 US Gallon | 128 US Fluid Ounces |
| 1 Liter | 1,000 Milliliters |
US customary cup, tablespoon and teaspoon measures differ from some metric and international cooking standards. These reference relationships do not imply every unit is available in the live converter.
How to Convert Fahrenheit to Celsius
Temperature conversions are different from ordinary conversions because the Fahrenheit and Celsius scales have different zero points.
Fahrenheit to Celsius Example
Example: Suppose the temperature is 68 degrees Fahrenheit.
Step 1: Subtract 32
Step 2: Multiply by 5
Step 3: Divide by 9
How to Convert Celsius to Fahrenheit
To reverse the conversion, multiply Celsius by 9/5 and then add 32.
For example, 30 degrees Celsius:
Fahrenheit and Celsius Temperature Chart
| Fahrenheit | Celsius |
|---|---|
| 0°F | -17.78°C |
| 32°F | 0°C |
| 50°F | 10°C |
| 68°F | 20°C |
| 77°F | 25°C |
| 86°F | 30°C |
| 98.6°F | 37°C |
| 100°F | 37.78°C |
| 212°F | 100°C |
When Is a Unit Converter Useful?
Home Improvement and Construction
Convert inches, feet, yards and meters when planning building projects, measuring rooms, or ordering materials.
Cooking and Baking
Convert common volume and weight measurements when following recipes or comparing ingredient quantities.
Travel and Transportation
Convert miles to kilometers, or gallons to liters, when traveling between countries with different measurement systems.
Education and Schoolwork
Practice measurement conversions in math, science, and everyday problem-solving.
Sports and Fitness
Convert distances and weights when comparing workout measurements or sports statistics.
Temperature Comparisons
Convert Fahrenheit and Celsius when reading temperature information from different measurement systems.
Metric vs. US Customary Units
The metric system uses units such as meters, grams, liters and degrees Celsius.
US customary measurements commonly include inches, feet, miles, pounds and US gallons.
Metric prefixes such as kilo-, centi- and milli- describe decimal relationships between units.
For example:
Understanding these relationships makes metric conversions easier to calculate and verify.
How to Avoid Unit Conversion Mistakes
- Check the category. Do not confuse length, weight, volume and temperature.
- Confirm From and To. Ensure the conversion direction is correct.
- Use the correct standard. US and Imperial measurements may differ.
- Don’t confuse fluid ounces with weight ounces. Fluid ounces measure volume, while avoirdupois ounces measure mass.
- Check decimal places. Rounding can affect precision.
- Use temperature formulas correctly. Fahrenheit and Celsius require an offset as well as a scaling factor.
- Verify technical work. Use required professional standards for safety-critical measurements.
Frequently Asked Questions
How do I convert feet to inches?
Multiply the number of feet by 12. For example, 5 feet equals 60 inches.
How many inches are in one foot?
One foot contains exactly 12 inches.
How many feet are in one yard?
One yard equals three feet.
How many feet are in one mile?
One mile equals 5,280 feet.
How do I convert inches to centimeters?
Multiply inches by 2.54.
How many centimeters are in one inch?
One inch equals exactly 2.54 centimeters.
How do I convert miles to kilometers?
Multiply miles by 1.609344.
How many kilometers are in one mile?
One mile equals 1.609344 kilometers.
How do I convert pounds to kilograms?
Multiply pounds by 0.45359237.
How many kilograms are in 100 pounds?
100 pounds is approximately 45.36 kilograms.
How many ounces are in a pound?
There are 16 avoirdupois ounces in one pound.
How do I convert kilograms to pounds?
Multiply kilograms by approximately 2.20462.
How many liters are in one US gallon?
One US liquid gallon equals 3.785411784 liters.
How do I convert gallons to liters?
Multiply US liquid gallons by 3.785411784.
Are US gallons and Imperial gallons the same?
No. An Imperial gallon is larger than a US gallon.
How many milliliters are in a liter?
One liter contains 1,000 milliliters.
How do I convert Fahrenheit to Celsius?
Subtract 32 from the Fahrenheit temperature, multiply by five and divide by nine.
What is 68°F in Celsius?
68 degrees Fahrenheit equals 20 degrees Celsius.
How do I convert Celsius to Fahrenheit?
Multiply Celsius by nine, divide by five and add 32.
What is 100°C in Fahrenheit?
100 degrees Celsius equals 212 degrees Fahrenheit.
Can I swap the units?
Yes. Use the Swap Units button to reverse the conversion direction.
Can I convert decimal measurements?
Yes. Enter the numerical value you want to convert, including decimals when appropriate.
Are the conversion results exact?
Many standard conversion relationships are exact, but displayed results may be rounded.
Is the MyCruncher Unit Converter free?
Yes! The MyCruncher Unit Converter is free to use for everyday measurement conversions.
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Important: This Unit Converter guide provides educational conversion examples and reference tables. Conversion categories and available units depend on the live calculator’s selections. Displayed results may be rounded. For engineering, medical, commercial or other precision-sensitive applications, verify the relevant measurement standards and required accuracy.