The database contains data points extracted from the systematic review on the effect of land-use and land-cover changes on mangrove blue carbon at global scale. The data points are summarised into four spreadsheets comprising carbon stocks, soil greenhouse gas (GHG), forest structure and soil properties data from land-based mangrove conversion and regeneration. Dataset 1 contains carbon stock, forest structure, soil properties, and soil GHG (CO2 and CH4) effluxes data from paired study sites between undisturbed control and disturbed treatment (tree removal, aquaculture, rice field, pasture, and other category). Dataset 2 contains carbon stock, forest structure, soil properties, and soil GHG (CO2 and CH4) effluxes data from regenerated mangroves.