Cellular respiration mainly produces ATP (usable energy for the cell), carbon dioxide, and water.

Quick Scoop: What does cellular respiration produce?

Think of cellular respiration as your cells’ power plant : they take in fuel (like glucose and oxygen) and send out energy plus waste products.

Core products

  • ATP (adenosine triphosphate) – the main energy currency that powers cell work such as muscle contraction, active transport, and biosynthesis.
  • Carbon dioxide (CO₂) – a waste gas you exhale; it comes mostly from reactions in the Krebs (citric acid) cycle.
  • Water (H₂O) – formed at the end of the electron transport chain when oxygen accepts electrons and combines with protons.

For one molecule of glucose in aerobic respiration, cells typically generate around 29–30 ATP molecules (classic textbooks sometimes state 36–38, but that’s an upper estimate).

Mini breakdown by stage

  • Glycolysis (cytoplasm): produces a small amount of ATP, NADH, and pyruvate from glucose.
  • Krebs / TCA cycle (mitochondrial matrix): produces CO₂, more NADH, FADH₂, and a little ATP.
  • Electron transport chain & oxidative phosphorylation (inner mitochondrial membrane): uses NADH and FADH₂ to generate most of the ATP and produces water.

Simple way to remember

A commonly used overall equation is:

Glucose + Oxygen → Carbon dioxide + Water + ATP

So, when someone asks “what does cellular respiration produce?” , the concise answer is: ATP, carbon dioxide, and water.

TL;DR: Cellular respiration turns food energy into ATP and releases carbon dioxide and water as waste.

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