The Mixing Oceanographic Toolbox provides a framework to estimate the dissipation rate and diffusivity from Electromagnetic Autonomous Pro ling Explorer (EM-APEX) oat observational data. The EM-APEX floats measure the temperature, salinity, pressure, and horizontal velocity of the current. Vertical gradients of velocity and buoyancy are estimated and a fi nescale parameterization is applied. This method provides order of magnitude estimates of mixing as well as estimates of the regional variability of mixing.