Superconducting circuits are a leading technology for the realisation of practical quantum computers. However, scaling-up towards full-scale, fault-tolerant quantum computers will involve addressing many challenges concerning, e.g., qubit coherence, reproducibility, stability, cross-talk, control, and readout. To achieve this, a new generation of metrological methods and tools is needed. The MetSuperQ project, funded by SERI and the European Union, will develop such a suite of tools for superconducting qubits and apply them to one- and two-qubit circuits. These new tools will underpin further engineering advances and allow for accurate characterisation of qubits and materials, as well as manipulation and read-out. The Quantum Device Lab will contribute with its state-of-the-art equipment and know-how, for example in designing and fabricating qubit samples and benchmarking. MetSuperQ encompasses four world-leading universities and eight national metrology institutes, such as Physikalisch-Technische Bundesanstalt (DE), Istituto Nazionale di Ricerca Metrologica (IT), and Eidgenössisches Institut für Metrologie (CH). For a full list of participants and further information, please have a look at the project website.