Table of Contents
| Category | F4U Corsair | A6M Zero | Edge |
|---|---|---|---|
| Guns | Six .50 caliber machine guns | Two 20 mm cannon, two 7.7 mm machine guns | Even |
| Low-speed turning | Heavier, wider turns | Excellent | Zero |
| Built | 12,571 | About 10,900 to 11,300 | Zero (close) |
Both were carrier fighters built on opposite philosophies. The Zero traded armor for agility and range, and the Corsair spent its weight on a huge engine.
This page covers the F4U Corsair and the Mitsubishi A6M Zero in turn, then how they actually fought and whether the famous kill ratio holds up.
Where the F4U Corsair wins
Speed, climb and dive
The Corsair’s Pratt & Whitney R-2800 made 2,100 hp (1,566 kW), more than double the Zero’s 940 hp (701 kW). The result is a top speed of 447 mph (719 km/h) against 331 mph (533 km/h).
Later Zeros narrowed the gap a little. The A6M5 reached 351 mph (565 km/h), which is still about 96 mph (155 km/h) short of the Corsair.
Wikipedia sums up the match-up this way: the Zero could out-turn the Corsair at low speed, but the Corsair was faster and could out-climb and out-dive it. The dive matters because the Zero had a low never-exceed speed, which made it vulnerable in a dive.
Lt. Kenneth Walsh, a Corsair ace, put it in one line: the F4U could outperform a Zero in every aspect except slow-speed maneuverability and slow-speed rate of climb.
Armor, fuel tanks and toughness
The Zero was light because it left things out. Most had no self-sealing fuel tanks and no armor plate, and Wikipedia says that made it more vulnerable than its contemporaries.
The Corsair carried six .50 caliber (12.7 mm) Browning machine guns, three in each outer wing. It could also carry up to eight rockets and 4,000 lb (1,800 kg) of ordnance, which made it a capable ground-attack aircraft as well.
The trade each designer made
The Zero gave up armor and self-sealing tanks to get range and turning ability. The Corsair spent its weight on a 2,100 hp engine and firepower. In 1941 either choice looked right, but by 1943 the second one fit the war better.
Edge: Corsair
Where the Zero wins
Low-speed turning
The Zero weighed 3,704 lb (1,680 kg) empty, against 9,205 lb (4,175 kg) for the Corsair. That light build gave it a very tight turn at low speed, and Osprey notes a skilled Zero pilot could out-maneuver a Corsair at lower altitudes.
The advantage faded quickly with speed. After testing a captured Zero, US pilots found the controls very light at 200 mph (320 km/h) but stiff above 216 mph (348 km/h).
That is why Walsh said you avoided getting slow when fighting a Zero. A Corsair that stayed fast could dive in, fire and climb away.
Range and cannon
The Zero’s listed range is 1,160 miles (1,870 km), against 1,000 miles (1,620 km) for the Corsair in AeroCorner’s database. A light airframe is part of why a carrier fighter could range so far.
The Zero also carried two 20 mm Type 99 cannon in the wings, with 60 rounds per gun, plus two 7.7 mm machine guns. Cannon hit harder than .50 caliber rounds, but the Corsair’s six guns put more bullets in the air.
Edge: Zero, at low speed and long range
How the Corsair and Zero actually fought
The Corsair first flew on May 29, 1940, but it did not see combat until February 14, 1943, from Henderson Field on Guadalcanal. That first mission, an escort for a raid on Kahili, went badly and became known as the Saint Valentine’s Day Massacre.
The Navy standardized on the Hellcat for its carriers, so the Corsair went to the Marines and flew from land bases. The Navy accepted it for shipboard operations in April 1944.
The main arena was the Solomons and Rabaul. Osprey says late-model Zeros were common at Rabaul from October 1943, and that one Navy squadron and 18 Marine squadrons flew Corsairs in the Solomons.
The 11-to-1 kill ratio
Wikipedia says Corsair pilots claimed 2,140 air victories against 189 losses to enemy aircraft, an overall ratio of more than 11 to 1. It also cites a 12-to-1 ratio against the Zero specifically.
These are claims. Osprey checked the records of all 673 Corsairs that served in the Solomons theater against Japanese loss records and concluded the advantage is not as generous as most publications say.
Osprey also notes that Allied units rarely reconciled their claims, and that more Corsairs were lost to operational and mechanical problems than to air combat.
Two myths about the Corsair and the Zero
The 11-to-1 ratio is a US claim, not an audited result. And the nickname Whistling Death, often credited to the Japanese, was reportedly created by Vought’s publicity department and appears nowhere in Japanese literature, according to Osprey.
Even so, no source in this comparison disputes the direction of the result. The Corsair won more fights than it lost against the Zero, because it had more power and a better armed, tougher airframe.
Numbers built and legacy
Vought and its partners built 12,571 Corsairs in 16 models between 1942 and 1953, the longest production run of any US piston fighter. Final deliveries went to the French in 1953.
Zero totals depend on the source: 10,939 in the infobox, 10,934 in the US Strategic Bombing Survey and 11,291 in Francillon. Wikipedia notes Japan built more Zeros than any other combat aircraft of the war.
For how the Zero fared against other fighters, see our comparisons of the P-51 Mustang vs the Zero and the F6F Hellcat vs the Zero. For the Corsair against another American fighter, see P-51 Mustang vs F4U Corsair.
Which was the better fighter, the Corsair or the Zero?
The F4U Corsair was the better fighter. It was faster, climbed higher, dove harder and carried more firepower with more protection.
The Zero was the better turner and had slightly longer range, and in 1941 and 1942 that was enough. By the time the Corsair arrived in 1943, the Zero had not changed, but the war around it had.
Verdict: the Corsair wins
F4U Corsair: faster, better climb and dive, more power, more firepower, more toughness. A6M Zero: tighter low-speed turns and longer listed range. Edge in a fair fight: Corsair, as long as it stays fast.
FAQ
Sources and references used for research and fact-checking.
About the Author
Tim is the owner and lead editor of AeroCorner since 2019, overseeing aviation content covering aircraft, airlines, airports, and the broader aviation industry. Through years of researching, writing, editing, and publishing aviation-focused content, he has developed extensive practical knowledge of commercial aviation and air travel. Based in Asia and a frequent traveler himself, Tim also brings firsthand passenger experience to AeroCorner’s coverage. Outside of publishing, he has also explored aviation firsthand through hands-on flight training in New Zealand.