Expert Verified Updated: March 2026

Winter Pool Cover Size Calculator

Find the correct winter cover size based on your pool dimensions and overlap requirements.

Quick Conclusion
A winter pool cover should be 4-5 feet larger than your pool's actual dimensions to account for water level drop and overlap. For a 20x40 pool, a 25x45 cover is the standard.

Technical Comparison

Cover TypeDurabilitySafety
Solid TarpModerateLow
Mesh SafetyExtremeElite
Solid SafetyExtremeElite (Pro)

Actionable Steps

Pro-Tip

Always measure twice. If you are between sizes, go larger. A loose cover is annoying, but a tight cover will fail under heavy snow load.

Frequently Asked Questions

How much overlap?

4 feet is standard for most regions.

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Free PDF checklist including seasonal schedules, chemical balancing secrets, and maintenance tips.