How do I use the unit converter?

Choose a category (like Length or Weight), enter a value, then select the “From” unit and the “To” unit. The calculator shows the main result and also lists all conversions in the right column.

Why do I see many results in the right list?

The right list shows the same input value converted into all available units so you can compare units at a glance.

How accurate are the conversions?

The converter uses standard reference factors for each unit. Results are formatted to stay readable while keeping meaningful precision.

Why can time conversions for months/years differ from other tools?

Months and years can be defined differently depending on context (calendar vs. average length). This tool uses common reference lengths for consistency.

What unit systems are supported?

The unit converter supports the metric system, imperial units, and commonly used US customary units. Depending on the category, this includes meters and kilometers, feet and miles, kilograms and pounds, liters and gallons, as well as seconds, minutes, and hours.

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Length conversions

The length converter makes it easy to move between different distance units when you work with more than one measurement system. You can enter a value in meters, kilometers, centimeters, millimeters, inches, feet, yards or miles and immediately see how it looks in the other units. The calculations rely on commonly used reference factors, so the results stay consistent and can be checked at any time. This way you can compare distances, plan dimensions and quickly understand values that are written in a unit you do not usually use.

Popular length conversions

m to ft – meters to feet
ft to m – feet to meters
km to miles – kilometers to miles
miles to km – miles to kilometers
cm to inches – centimeters to inches
inches to cm – inches to centimeters

Weight & mass conversions

The weight converter helps you handle different mass units without having to remember any formulas. You can type a value in kilograms, grams, milligrams, ounces, pounds, stones or tons and see the matching numbers in the other supported units. The converter uses established conversion factors so that the results remain stable and predictable. This gives you a clear overview of how different weight values relate to each other and makes it easier to read or share measurements in the format you prefer.

Popular weight and mass conversions

kg to lbs – convert kilograms to pounds
lbs to kg – convert pounds to kilograms
g to oz – convert grams to ounces
oz to g – convert ounces to grams
kg to g – kilograms to grams conversion
g to kg – grams to kilograms

Temperature conversions

The temperature converter is designed to switch smoothly between Celsius, Fahrenheit and Kelvin. When you enter a value in one scale, the tool applies the correct offset and scaling so that the other two values are shown accurately. This helps you compare readings from different regions or contexts without doing the math yourself. It also gives you a quick feeling for how warm or cold a number is when it appears in a scale you are less familiar with.

Popular temperature conversions

C to F – Celsius to Fahrenheit
F to C – Fahrenheit to Celsius
C to K – Celsius to Kelvin
F to K – Fahrenheit to Kelvin

Volume conversions

The volume converter supports both metric and imperial style units so you can work comfortably with different kinds of measurements. You can start with liters, milliliters or cubic meters, or with units like gallons, quarts, pints, cups or cubic inches, and see the corresponding values in the other systems. All results are based on widely accepted reference values, which keeps the calculations consistent. The layout is meant to give you a clear view of how each unit compares, so you can judge quantities more confidently.

Popular volume conversions

L to gallons – liters to gallons
gallons to L – gallons to liters
mL to oz – milliliters to fluid ounces
oz to mL – fluid ounces to milliliters
cups to mL – cups to milliliters
m3 to L – cubic meters to liters

Area conversions

The area converter focuses on surface measurements in both metric and non-metric units. You can enter a value in square meters, square kilometers, square centimeters, square millimeters, acres, square feet or square yards and see the matching values side by side. The converter uses standard factors, so the numbers remain reliable when you compare or reuse them. This makes it easier to understand land size, floor space or other surface related data, even when different unit systems are involved.

Popular area conversions

m2 to ft2 – square meters to square feet
ft2 to m2 – square feet to square meters
acres to m2 – acres to square meters
m2 to acres – square meters to acres
hectares to acres – hectares to acres
km2 to mi2 – square kilometers to square miles

Time conversions

The time converter lets you see how a duration looks across several time units at once. You can start with seconds, minutes, hours, days, weeks, months or years and instantly view the equivalent values in the other units. The calculations follow common reference lengths, so the results stay consistent and intuitive to read. This helps you better understand time spans, plan schedules and compare durations without switching between different tools.

Popular time conversions

hours to minutes – convert hours to minutes
minutes to hours – convert minutes to hours
days to hours – convert days to hours
seconds to minutes – convert seconds to minutes
weeks to days – convert weeks to days
months to days – convert months to days (approx.)

Convert length units

How this unit converter works