The Sustainable Development Goal (SDG) Target 3.1 calls for a reduction in the global maternal mortality ratio (MMR) to less than 70 per 100 000 by 2030; and no country should have an MMR greater than 140 per 100 000. The Maternal Mortality on-line progress calculator can be used to compute the MMR reduction and annual rate of reduction for an individual country based on the SDG global and country MMR targets.