Rate

Rate or rates may refer to:


 * Rate (mathematics), a specific kind of ratio, in which two measurements are related to each other
 * Rate of travel, or velocity
 * Naval rating or rate, terms used to designate specialty or seniority of enlisted naval personnel.
 * Rate of a ship, a term indicating a sail ship's firepower in the British Royal Navy
 * Bit rate, number of bits that are conveyed or processed per unit of time
 * Rates, a Portuguese parish and town located in the municipality of Póvoa de Varzim


 * In math and finance:
 * Rate function, a function used to quantify the probabilities of rare event
 * Rates (tax), a type of taxation system used to fund local government
 * Exchange rate, specifies how much one currency is worth in terms of the other


 * In human growth:
 * Birth rate, the natality or childbirths per 1,000 people per year
 * Mortality rate, a measure of the number of deaths in some population


 * As an initialism
 * Radioisotopes and the Age of the Earth, a project of creation geophysics