In general, a Magento 1 to Magento 2 migration project will take from 1-3 months to complete based on the capabilities of the certified Magento migration agency and the expectations from this migration. Our Magento 2 migration solutions ensure businesses with best-in-class Magento 2 data migration in order to deliver seamless user experience post upgradation.
Please feel free to contact us at sales@sigmainfo.net for more details on Magento 2 migration services at Sigma.