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Architectural Calculators — Construction

Daylight and opening geometry: daylight factor and autonomy, door and window areas, and arch geometry. Daylight factor is a ratio to outdoor illuminance, which is why it stays useful across different sky conditions.

All Architectural & Design Calculators

About Architectural & Design Calculators

Daylight and opening geometry: daylight factor and autonomy, door and window areas, and arch geometry. Daylight factor is a ratio to outdoor illuminance, which is why it stays useful across different sky conditions.

Whether you need to solve a one-time problem or verify your own calculations, these free tools cover the most common architectural & design scenarios. All results are computed in your browser — no data is sent to any server.

What You Can Calculate

This section includes 11 tools: Arch Calculator, Daylight Autonomy Simple Calculator, Daylight Factor Calculator, Door Area Calculator, Glazing Uvalue to Rvalue Calculator, Net to Gross Area Ratio Calculator, Occupant Load Calculator, Room Volume Calculator, and 3 more. Each calculator is free to use with no signup required.