Biodegradation Time Estimator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 27, 2026Biodegradation Time Estimator
How long does everyday trash actually take to break down in the environment? This calculator looks up commonly cited reference estimates for a range of familiar materials.
Reference Table
| Material | Estimated Time |
|---|---|
| Banana peel | ~1 month |
| Paper | ~2 months |
| Cotton fabric / cardboard | ~6 months |
| Cigarette butt | ~10 years |
| Plastic bag | ~20 years |
| Tin can / Styrofoam cup | ~50 years |
| Disposable diaper | ~500 years |
| Plastic bottle | ~450 years |
| Fishing line | ~600 years |
| Aluminum can | ~200 years |
| Glass bottle | ~1,000,000 years (effectively permanent) |
Important Caveats
These are widely cited approximate figures from environmental science education materials, not precise laboratory measurements - actual degradation time varies enormously based on environmental conditions (UV/sunlight exposure, moisture, temperature, and microbial activity). Landfill conditions in particular often slow degradation far below open-air estimates, since buried waste is deprived of the oxygen and light exposure that speeds decomposition above ground - some biodegradable-seeming materials have been found essentially intact and readable after decades in landfill excavation studies.