Free Unit Converter

Convert units instantly. Clear formulas, accurate results, no clutter.

Popular converters

• Pounds to Kilograms lb → kg
• Kilograms to Pounds kg → lb
• Milliliters to Ounces mL → fl oz
• Fluid Ounces to Cups fl oz → cup
• Feet to Centimeters ft → cm
• Liters to Gallons L → gal

Browse by category

• Weight How heavy something is — pounds, kilograms, grams and ounces.
• Volume How much liquid fits in something — milliliters, cups, quarts and gallons.
• Length How long or tall something is — feet, centimeters and meters.
• Area How much floor or ground something covers — square meters and square feet.

Why UnitConverterOne

• Two steps, nothing else Type a number, read the answer. No sign-up, no popup before the result.
• Exact factors Every converter uses the official definition of the unit, stored once and shared by both directions.
• Honest about units US and Imperial differences are spelled out instead of quietly ignored.

All 10 converters

• Milliliters to Ounces mL → fl oz
• Grams to Pounds g → lb
• Fluid Ounces to Cups fl oz → cup
• Quarts to Gallons qt → gal
• Square Meters to Square Feet m² → ft²
• Liters to Gallons L → gal
• Feet to Centimeters ft → cm
• Pounds to Ounces lb → oz
• Pounds to Kilograms lb → kg
• Kilograms to Pounds kg → lb

Want the numbers behind the results? Read our conversion methodology.