how fast is the flash

The Flash is depicted as being able to move anywhere from hypersonic speeds to absurd, beyond–light-speed levels, depending on the version and the story.

Core answer: how fast is the Flash?

• In many modern DC Comics stories (especially with Wally West), the Flash has been calculated at about 2.5 quintillion miles per second , which is roughly 13 trillion times the speed of light.

• Live‑action TV versions, like the CW’s Barry Allen, are usually shown much slower, often in the millions of miles per hour range at peak without extra boosts.

• Some articles and fan analyses also quote “consensus” grounded speeds around 17,500 miles per hour for more grounded interpretations, still vastly beyond real-world aircraft.

Different versions, different speeds

Comics (Wally West & Barry Allen)

• Wally West has on-panel feats corresponding to 2.5 quintillion miles per second , allowing him to massively exceed light speed and time travel via the Speed Force.

• These speeds are so extreme that writers often treat them more like a story device (time travel, reality changes) than something to apply realistic physics to.

TV / Arrowverse Flash (Grant Gustin)

• Early on, Barry is clocked at about Mach 13 (around 9,975 mph), and later seasons push him into the multi‑million mph territory when he taps deeper into the Speed Force.

• A commonly cited figure from Season 9 material is around 8.3 million miles per hour without extra external Speed Force sources.

Other takes & fan calculations

• Some breakdowns and forum-style discussions talk about “realistic” Flash speeds, using numbers like 17,500 mph to compare him to the fastest jets and spacecraft, just for fun scaling.

• Science‑style pieces highlight feats like evacuating hundreds of thousands of people in a fraction of a microsecond, underscoring that, in many comics, his speed is essentially “as fast as the plot needs.”

Why the numbers get ridiculous

• The Flash draws power from the Speed Force , a fictional extradimensional energy field that lets him ignore normal limits like friction, air resistance, and even some causality.

• Because of this, he can:
  • Run faster than light.
  • Time travel and alter timelines.
  • Vibrate through solid objects and throw lightning.
  • Think and react in less than an attosecond.

In short, if you go by big modern comic feats, the Flash is faster than light by trillions of times , while TV and movie versions usually keep him at “only” insanely fast but somewhat more finite speeds.

Information gathered from public forums or data available on the internet and portrayed here.