Despite the magnitude of these losses by the Americans, the Japanese sustained even greater casualties at Okinawa than in any previous Pacific battle.
The US military estimates that 110,071 Japanese soldiers were killed during the battle. This total includes conscripted Okinawan civilians.A total of 7,401 Japanese regulars and 3,400 Okinawan conscripts surrendered or were captured during the battle. Additional Japanese and renegade Okinawans were captured or surrendered over the next few months, bringing the total to 16,346. This was the first battle in the Pacific War in which thousands of Japanese soldiers surrendered or were captured. Many of the prisoners were native Okinawans who had been pressed into service shortly before the battle, and were less imbued with the Imperial Japanese Army's no-surrender doctrine. When the American forces occupied the island, many Japanese soldiers put on Okinawan clothing to avoid capture, and some Okinawans would come to the Americans' aid by offering to identify these mainland Japanese.
The Japanese lost 16 combat vessels, including the super battleship Yamato. Postwar examination of Japanese records revealed that Japanese aircraft losses at Okinawa were far below often-repeated US estimates for the campaign. The number of conventional and kamikaze aircraft actually lost or expended by the 3rd, 5th, and 10th Air Fleets, combined with about 500 lost or expended by the Imperial Army at Okinawa, was roughly 1,430. The Allies destroyed 27 Japanese tanks and 743 artillery pieces (including mortars, anti-tank and anti-aircraft guns), some of them eliminated by the naval and air bombardments but most knocked out by American counter-battery fire.
Some of the other islands that saw major battles in World War II, such as Iwo Jima, were uninhabited or had been evacuated. Okinawa, by contrast, had a large indigenous civilian population; US Army records from the planning phase of the operation make the assumption that Okinawa was home to about 300,000 civilians. According to various estimates, between a tenth and a third of them died during the battle, between 30,000 and 100,000. Okinawa Prefecture's estimate is over 100,000 losses, while the official US Army count for the 82-day campaign is a total of 142,058 civilian casualties, including those killed by artillery fire, air attacks, and those pressed into service by the Imperial Japanese Army.
During the battle, American soldiers found it difficult to distinguish civilians from soldiers. It became common for them to shoot at Okinawan houses