The invention relates to a system 10 for determining a force applied to a cell or tissue culture 14 arranged in a culture chamber 12, comprising an elastic element 30 mounted in or suitable for mounting in said culture chamber 12, said elastic element 30 being adapted to be coupled with said cell or tissue culture 14 such that a force applied to said cell or tissue culture 14 leads to a deflection of said elastic element 30 against a restoring force thereof, and said elastic element comprising a magnetic element 34 arranged such as to be moved upon deflection of said elastic element 30, a magnetic field sensor 42 mounted or suitable for mounting outside said culture chamber 12, said magnetic field sensor 42, when mounted outside said culture chamber 12, being adapted to detect a change of magnetic field attributable to a corresponding movement of said magnetic element 34 upon deflection of said elastic element 30.