Mean Kinetic Temperature (MKT) Calculator
Assess pharmaceutical storage and cold-chain temperature data using the Haynes equation. MKT weights higher temperatures more heavily than a simple average, as required by USP and ICH stability guidance.
Paste readings from a data logger — separate by commas, spaces, or new lines.
Standard pharmaceutical default is 83.144 kJ/mol. Change only with a documented, product-specific value.
MKT proves the temperature. FirstScanIt proves the unit.
A clean MKT shows a shipment stayed cold — but not that the box on the shelf is the same genuine unit that shipped. FirstScanIt's signed QR ties each serialised pack to its real journey, so authenticity and chain-of-custody travel together.
Cold-Chain + Authenticity TrackingWhat Is Mean Kinetic Temperature?
Mean Kinetic Temperature (MKT) is a single calculated temperature that captures the cumulative thermal stress on a product over a period of storage or transit. Because chemical degradation accelerates exponentially with heat (Arrhenius behaviour), a short hot excursion damages a product more than a simple average suggests — so regulators require MKT, not a plain mean, when evaluating storage data.
The Haynes Equation
This tool uses the Haynes (1971) equation referenced in USP and ICH Q1A: MKT = (ΔH/R) ÷ −ln of the mean of e−ΔH/(R·T), where ΔH is the activation energy, R is the gas constant (8.314 J/mol·K), and each T is a reading in kelvin. The pharmaceutical default ΔH is 83.144 kJ/mol.
When MKT Matters
- Warehouse qualification — demonstrating a storage area holds within its labelled condition.
- Cold-chain / shipping lanes — evaluating logger data after transit.
- Excursion assessment — judging whether a temperature deviation affected product quality.
- Stability programmes — reporting the effective storage temperature of an ongoing study.
Related Tools
Map a product to its global storage condition with the ICH Stability Zone Calculator, or estimate shelf life from accelerated data with the Shelf Life Calculator (ICH Q1E).
Disclaimer: Provided for general engineering reference. MKT acceptance, the activation-energy assumption, and excursion decisions must follow your validated SOPs and applicable USP/ICH guidance. Runs entirely in your browser.