Light Fixture Spacing Calculator

How Light Fixture Spacing works

For Light Fixture Spacing, use spacing = height × spacing ratio. Light Fixture Spacing uses Mounting height above task plane, Spacing-to-height ratio to report Fixture spacing. Continue to LED Array Configuration Calculator for total LEDs.

With the loaded values, fixture spacing evaluates to 2.88 m. Test mounting height above task plane separately and preserve the baseline fixture spacing.

Inputs for Light Fixture Spacing

Mounting height above task plane and Spacing-to-height ratio belong to Light Fixture Spacing. Keep source units with mounting height above task plane.

The Light Fixture Spacing defaults demonstrate arithmetic only. Replace mounting height above task plane with case-specific data.

Mounting height above task plane

Example entry: 2.4 m.

Spacing-to-height ratio

Example entry: 1.2.

Reading the Light Fixture Spacing result

This output represents Light Fixture Spacing.

Before selecting equipment for Light Fixture Spacing, compare fixture spacing with available ratings and operating limits. Use Lighting Energy Cost Calculator.

Measurement and units

Photometric results depend on fixture distribution, reflectance, mounting, maintenance, and the measured task plane. Check prefixes on mounting height above task plane. For illuminance, use Inverse Square Lighting Calculator.

Keep the mounting height above task plane unit and measurement point consistent across Light Fixture Spacing cases.

Limits of this calculation

Verify uniformity with fixture photometric data.

Only the listed Light Fixture Spacing inputs contribute to fixture spacing. Unentered effects remain outside Light Fixture Spacing.

A useful Light Fixture Spacing comparison

Record fixture spacing before testing a different mounting height above task plane value.

Document the alternate mounting height above task plane source. Compare this result with Lighting Circuit Current Calculator when circuit current is also needed.

Questions about Light Fixture Spacing