Look up rate in Wiktionary, the free dictionary.

Rate or rates may refer to:

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

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

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