🔀 Unit Conversion Calculators
Eighteen converters, one per conversion people actually look up, each with the exact factor rather than a rounded one and a note on where the two units are used.
Kg to Lbs
Kilograms to Pounds, with the exact factor and common values.
⚖️Lbs to Stone
Pounds to Stone, with the exact factor and common values.
⚖️Grams to Ounces
Grams to Ounces, with the exact factor and common values.
📏Cm to Inches
Centimetres to Inches, with the exact factor and common values.
📏Feet to Cm
Feet to Centimetres, with the exact factor and common values.
📏Miles to Km
Miles to Kilometres, with the exact factor and common values.
📏Meters to Feet
Metres to Feet, with the exact factor and common values.
📏Mm to Inches
Millimetres to Inches, with the exact factor and common values.
🌡️Celsius to Fahrenheit
Celsius to Fahrenheit, with the exact factor and common values.
🧪Liters to Gallons
Litres to US Gallons, with the exact factor and common values.
🧪Ml to Oz
Millilitres to US Fluid Ounces, with the exact factor and common values.
🧪Cups to Ml
US Cups to Millilitres, with the exact factor and common values.
🏎️Mph to Kmh
Miles per Hour to Km/h, with the exact factor and common values.
📐Sq Ft to Sq M
Square Feet to Square Metres, with the exact factor and common values.
📐Acres to Hectares
Acres to Hectares, with the exact factor and common values.
⏱️Days to Hours
Days to Hours, with the exact factor and common values.
⏱️Minutes to Hours
Minutes to Hours, with the exact factor and common values.
💾MB to GB
Megabytes to Gigabytes, with the exact factor and common values.
About these 18 unit conversions tools
One page per conversion, because that is how people look them up. Each carries the exact internationally defined factor rather than the rounded one — an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg, both fixed by treaty, so these conversions have no measurement uncertainty at all.
The notes matter more than the arithmetic here. A US gallon and an imperial gallon differ by 20% under the same name, a fluid ounce measures volume while an ounce measures weight, and a gigabyte means two different numbers depending on whether a disk manufacturer or Windows is doing the counting. Those are the places conversions actually go wrong.