One hour equals 3,600 seconds. Conversion formula: seconds = hours × 3,600
Ounce derives from Ancient Roman uncia, meaning "twelfth". One ounce equals exactly 28.349523125 grams. Term "ounce" entered English through Anglo-Norman and Middle French
Kilogram (kg) is the base SI unit of mass. Gram (10^-3 kg) is an SI derived unit. Tonne (t) is SI-compatible for masses above 10^3 kg
Nautical mile was originally defined as 1/60 of a degree latitude at equator. Navigation at sea was done by eye until 1500. Ratio of 60 miles to degree appeared in Ptolemy's Geography in 1482. English geographers recognized constant 60 miles/degree ratio by late 16th century
Data transfer rate measures bits, characters, or data blocks per unit time. Common units are bit/s and bytes/s, with Mbps commonly used for high-speed connections. One byte consists of 8 bits, synonymous with the unit octet
Pint is one eighth of a gallon in imperial and US customary systems. British imperial pint is about 20% larger than American pint. US liquid pint is 473 mL, dry pint is 551 mL