The world’s freighter fleet is expected to grow to 4,249 units by 2026, about 2.5 times the 2006 fleet, with each aircraft being more productive than the one it replaces. Allowing for aircraft retirement, some 3,778 deliveries will be needed. Of these, 2,901 will be converted from passenger or combi roles, while the remaining 877, or 23%, are expected to be new-built. In all cases, there are opportunities to replace, older generation freighters with more eco-efficient aircraft. The ratio of new deliveries to total demand is largely shaped by aircraft prices and utilisations, which drive passenger-to-freighter conversions. This ratio is expected to vary from zero, for small jets, to 50% for large aircraft.