Synopsis: Information and conversion charts of human body temperatures includes normal, high and low readings and COVID-19 fever readings. It is generally medically accepted that normal body temperature ranges between 36.5°C (97.7°F) to 37.5°C (99.5°F). Fever is indicated when human body temperature rises about one degree, or more, over the normal temperature of 37.0 degrees Celsius (98.6 degrees Fahrenheit).

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Main Digest

Did you know normal human body temperature is also known as normothermia or euthermia? And, your body temperature can be measured in many locations including, mouth, ear, armpit, forehead, and rectum? However, please note that your body temperature reading will vary depending on where the measurement is taken.
The armpit is about 0.5C lower than the human body"s core temperature (temperature of the internal organs) - the time of day, your age, and activity level, and, in women, the stage of menstrual cycle can also affect your temperature reading.

COVID-19 Fever Statistics

According to the World Health Organization (WHO):38.1% of cases reported fatigue.67.7% of cases that reported dry cough87.9% of 55,924 laboratory-confirmed cases reported a fever.

COVID-19 Fever Levels

Children: 38°C (100.4°F) and above (rectal temperature)Adults: 38°C (100.4°F) and above (oral temperature)Older adults: 37.8°C (100°F) and above (oral temperature)Or 1.1°C above the person"s usual value.It"s important to clarify that not all COVID-19 cases will get a fever, nor will everyone with a fever test positive for COVID-19, but it is an extremely common symptom. (1)
Body temperature thermometer

Quick Facts:

Body temperature can change throughout the day.Body temperature may be abnormal due to fever (high temperature) or hypothermia (low temperature).A temperature over 38°C (100.4°F) most often means you have a fever caused by infection or illness.It is generally medically accepted that normal body temperature ranges between 36.5°C (97.7°F) to 37.5°C (99.5°F).Body Temperature Can be Taken Either: Orally - By mouth - glass thermometer, or a digital thermometer.Rectally - Temperatures taken rectally tend to be 0.5 to 0.7 degrees F HIGHER than when taken by mouth.Forehead (Skin) - A special thermometer can quickly measure the temperature of the skin on the forehead.Ear - A special thermometer can quickly measure the temperature of the ear drum, which reflects the body"s core temperature.Axillary - Temperature taken under the arm (armpit) tend to be 0.3 to 0.4 degrees F LOWER than those temperatures taken by mouth.

What is the Normal Body Temperature for a Baby?

The American Academy of Pediatrics (AAP) states a normal body temperature for a healthy baby is between 97 and 100.3 degrees Fahrenheit. If the rectal temperature is 100.4 degrees or higher, they are considered to have a fever.

What is the Normal Body Temperature for Children?

The average normal body temperature for children is about 37°C (98.6°F). A child"s temperature usually averages from around 36.3°C (97.4°F) in the morning to 37.6°C (99.6°F) in the afternoon.

What is the Normal Body Temperature for Adults?

Temperature in the mouth (oral) is about 36.8°C (98.2°F)Temperature under the arm (axillary) is about 36.5°C (97.7°F)Temperature in the anus (rectum/rectal), vagina, or in the ear (otic) is about 37.5°C (99.5°F)

At What Temperature Are You said to Have a Fever?

According to the American Academy of Family Physicians, a fever is indicated when body temperature rises about one degree or more over the normal temperature of 37.0 degrees Celsius (98.6 degrees Fahrenheit).Adults:A fever is generally agreed to be present if:Temperature in the mouth (oral) is at or over 37.8°C (100°F)Temperature under the arm (axillary) is at or over 37.2°C (99.0°F)Temperature in the anus (rectum/rectal), in the ear (otic) or temporal artery temperature of 38°C (100.4°F) or higherChildren:A child is considered to have a fever if their rectal temperature is 38°C (100.4°F) or higher - or a child"s armpit temperature is 37.4°C (99.3°F) or higher.Fever Temperature Chart
Core Measurement (rectal, esophageal, etc.)
Classed as:CelsiusFahrenheit
HypothermiaNormal36.5 - 37.5°C97.7 - 99.5°F
Fever / Hyperthermia>37.5 or 38.3°C99.5 or 100.9°F
Hyperpyrexia>40.0 or 41.5°C104.0 or 106.7°F
Note: Various sources have slightly different temperatures for fever, hyperthermia and hyperpyrexia.

What is Basal Body Temperature?

Basal body temperature is defined as the lowest temperature attained by the human body during rest (usually during sleep). Basal body temperature is generally measured immediately after awakening, although the temperature measured at that time is somewhat higher than true basal body temperature. In women, body temperature will differ at various points in the menstrual cycle, and this temperature change can be used to track ovulation to aid conception or avoid pregnancy.

What is Core Body Temperature?

Core temperature is the operating temperature of an organism, specifically in deep structures of the body such as the liver, in comparison to temperatures of peripheral tissues. Core temperature is normally maintained within a narrow range so that essential enzymatic reactions can occur.

What is Hyperpyrexia?

The word used for a fever with an extreme elevation of body temperature greater than or equal to 41.5 °C (106.7°F).

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What is Hyperthermia?

A high temperature that is not a fever. Causes include heatstroke, neuroleptic malignant syndrome, idiosyncratic drug reactions, malignant hyperthermia, stimulants like amphetamines or cocaine, and serotonin syndrome.

What Body Temperature Denotes Hypothermia?

Hypothermia is defined as a drop in body temperature below 95 degrees Fahrenheit. Hypothermia can quickly become life threatening and should be treated as a medical emergency. Hypothermia is the opposite of hyperthermia which is present in heat exhaustion and heat stroke.

°C to °F and °F to °C Body Temperature Conversion Chart