Solar Panel Tilt Calculator

How to Use This Calculator

• Enter your latitude — Use positive values for the Northern hemisphere (e.g., 40.7 for New York) and negative for the Southern hemisphere (e.g., -33.9 for Cape Town).
• Select a city — Pick from the dropdown to auto-fill the latitude for major cities worldwide.
• Choose your mode — Seasonal adjusts for summer/winter, Monthly gives you the best angle for each specific month, and Year-Round provides a single fixed angle.
• Set your panels — Use the recommended tilt angle to adjust your solar panel mount for maximum energy production.

Why Tilt Matters

Solar panels produce the most electricity when sunlight hits them perpendicularly. A panel angled at the optimal tilt can capture 10–40% more energy than a flat-mounted panel, depending on your latitude. Adjusting the tilt seasonally — steeper in winter when the sun is low, flatter in summer when the sun is high — can further boost annual yield by 5–15%.

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