The temperature coefficient, also known as Q10, quantifies the rate (R) increase of a reaction for every 10-degree temperature rise (T). The rate (R) can represent various measurements, such as the velocity of action potential propagation along a nerve fiber (e.g., m/s), the production rate of chemical reaction products (e.g., mmol/s), the current conducted through an ion channel, pump, or transporter (e.g., pA, nA, μA), or the heart contraction rate per minute (i.e., beats per minute, bpm). To determine Q10, the rate of the physiological process is measured at two temperatures, T1 and T2, where T2 is greater than T1, resulting in rate measurements R1 (at T1) and R2 (at T2). The Q10 equation (provided below) is then used to estimate the Q10 for the process. The temperature must be in Celsius or Kelvin and cannot be in Fahrenheit. It’s important to note that T1 and T2 do not have to be exactly 10 degrees apart for the equation to be applied. Additionally, the temperature unit for both T1 and T2 must be the same, as well as the unit for the rate measurements (R1 and R2). Q10 values are valuable as they offer insights into the underlying mechanisms of the physiological process being studied.

## Temperature coefficient (Q10) equation

• Q10 is the factor by which the reaction rate increases when the temperature is raised by ten degrees. Q10 is a unitless quantity.
• R1 is the measured reaction rate at temperature T1 (where T1 < T2). Note that R1 and R2 must have the same unit.
• R2 is the measured reaction rate at temperature T2 (where T2 > T1). Note that R1 and R2 must have the same unit.
• T1 is the temperature at which the reaction rate R1 is measured (where T1 < T2). The temperature unit must be either the Celsius or the Kelvin, and may not be any other unit, such as the Fahrenheit. Note that T1 and T2 must have the same unit. T1 and T2 do not need to be exactly 10 degrees apart.
• T2 is the temperature at which the reaction rate R2 is measured (where T2 > T1). The temperature unit must be either the Celsius or the Kelvin, and may not be any other unit, such as the Fahrenheit. Note that T1 and T2 must have the same unit. T1 and T2 do not need to be exactly 10 degrees apart.

## Q10 Calculator

Result Will Be Diaplay here