Units converter
The conversions people search for, with the factor on the page. The app holds the long tail: 30 categories, history, and physical constants.
Distance
kilometers to milesmiles to kilometerscentimeters to inchesinches to centimetersmeters to feetfeet to metersmillimeters to inchesyards to meterskilometers to metersmeters to kilometersfeet to inchesinches to feetmeters to centimeterscentimeters to millimeters
Weight
kilograms to poundspounds to kilogramsgrams to ouncesounces to gramspounds to ouncesounces to poundskilograms to grams
Volume
liters to US gallonsUS gallons to litersmilliliters to US cupsUS cups to millilitersliters to millilitersmilliliters to liters