Daylight & Solar Gain Calculator

Analyse solar heat gain, visible light transmittance, daylight factor, and shading effectiveness. Compare glazing types and check code compliance.

EN 13363 · ASHRAE 90.1 · NCC

Glazing & Frame

Glazing Type

SHGC

0.82

VLT

0.88

U-value

5.8

Frame Type

Frame Fraction (0-1)

Window Geometry

Width (m)

Height (m)

Azimuth (deg, S)

Tilt (deg)

Location

Latitude (deg)

Longitude (deg)

Timezone (UTC)

Ground Reflectance (0-1)

Room (Daylight)

Depth (m)

Width (m)

Height (m)

Avg Reflectance (0-1)

Shading Device

Type

No shading device applied.

Daily Solar Gain Profile

Solar heat gain (W) through the window for each hour of the day

Solar & Optical Performance

SHGC (whole)

0.66

VLT (whole)

0.70

g-value

0.82

LSG

1.06

U-value

6.04W/m2K

Shading Factor

1.00

Peak Solar Gain

173W

Instantaneous Gain

173W

Daylight Factor

0.8%

Code Compliance

Standard

Climate Zone

ASHRAE 90.1-2019

Zone 3

SHGC ≤0.25

U ≤3.7