Q10 Temperature Coefficient Calculator
Measure temperature sensitivity of any reaction: enter the rate at two different temperatures and get the Q10 coefficient — the factor by which the rate changes for every 10 °C rise. A Q10 of 2 means the rate doubles every 10 °C.
°C
°C
Typical biological reaction (Q10 ≈ 2)
- 1
Rate ratio (R₂ ÷ R₁)
2 ÷ 1 = 2 - 2
Temperature exponent (10 ÷ ΔT)
10 ÷ (30 − 20) = 1Normalises the observed interval to the standard 10 °C reference. - 3
Q10 coefficient
2^1 = 2
这个计算器是如何工作的？
Q10 = (R₂/R₁)^(10/(T₂−T₁)) — the factor by which a reaction rate changes for every 10 °C change in temperature. Enter rates and temperatures at two conditions to compute it. Biological reactions typically have Q10 ≈ 2–3; diffusion processes ≈ 1–1.3. Values apply locally within the measured range.
公式
How this is calculated
The Q10 temperature coefficient quantifies how sensitive a reaction rate — metabolic, enzymatic, or chemical — is to temperature. The formula Q10 = (R₂ / R₁)^(10 / ΔT) normalises the observed rate ratio to a standard 10 °C interval, allowing fair comparison between experiments at different temperature ranges. A Q10 near 1 indicates the rate is nearly temperature-independent (as for most physical diffusion processes); biological enzyme-catalysed reactions typically give Q10 ≈ 2–3, meaning the rate doubles or triples every 10 °C; Q10 values above 3 suggest the temperature is approaching an optimum or that regulatory effects dominate.
The rates R₁ and R₂ can be in any consistent unit — per second, per minute, μmol/min, oxygen consumption, ventilation rate — as long as both are in the same unit. The temperatures T₁ and T₂ are entered in degrees Celsius; the formula works identically in Kelvin since only the difference ΔT matters.
Limitations: Q10 assumes the ratio R₂/R₁ follows a simple exponential (van't Hoff rule). Real biological systems break this assumption near temperature extremes — below the thermal minimum or above the optimum — where enzymes denature or regulatory mechanisms cut in. Q10 should be treated as a local approximation valid over the measured temperature range, not as a globally constant property of the reaction.
常见问题
Most enzyme-catalysed reactions have a Q10 of 2–3 in the physiologically normal temperature range, meaning the rate approximately doubles or triples every 10 °C. Simple physical processes like diffusion have Q10 ≈ 1–1.3.
Yes. Q10 < 1 means the rate decreases as temperature rises — which can happen above an enzyme's thermal optimum where denaturation dominates, or for certain exothermic equilibria where Le Chatelier's principle favours the reverse reaction.
No — the formula is symmetric with respect to swapping (R₁,T₁) and (R₂,T₂) because the sign flip in ΔT is exactly compensated by the inversion of R₂/R₁. You will get the same Q10 either way.
也称为
TG we-Calculate Editorial Team. (2026). Q10 Temperature Coefficient Calculator [Online calculator]. TG we-Calculate. https://we-calculate.com/zh/calculator/q10-calculator
TG we-Calculate Editorial Team. "Q10 Temperature Coefficient Calculator." TG we-Calculate. 2026. https://we-calculate.com/zh/calculator/q10-calculator.
TG we-Calculate Editorial Team, "Q10 Temperature Coefficient Calculator," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/zh/calculator/q10-calculator
@misc{wecalculate_q10_calculator, title = {Q10 Temperature Coefficient Calculator}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/zh/calculator/q10-calculator}}, year = {2026}, note = {TG we-Calculate} }
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