Office Lighting Calculators
Free tools to calculate lux, lumens, wattage, color temperature, and LED energy savings for offices, desks, meeting rooms, and workspaces.
Office Lighting Calculator
Estimate lumens, LED wattage, and fixture count for offices, meeting rooms, and open workspaces.
Use calculator →Desk Lighting Calculator
Find the right brightness and color temperature for your desk, home office, or workstation.
Use calculator →Lux to Lumens Calculator
Convert target lux and floor area into total lumens for any workspace.
Use calculator →Lumens to Lux Calculator
Convert total lumens and area into expected lux — check if existing lighting is bright enough.
Use calculator →Lumens to Watts Calculator
Estimate LED wattage from lumens and lighting efficiency.
Use calculator →LED Savings Calculator
Estimate annual energy and cost savings when upgrading office lighting to LED.
Use calculator →Recommended user paths
- Planning a whole office? Start with the Office Lighting Calculator.
- Setting up a desk or home office? Use the Desk Lighting Calculator.
- Converting units? Try Lux to Lumens or Lumens to Lux.
- Upgrading to LED? Estimate savings with the LED Savings Calculator.
How our calculators work
Calculations run entirely in your browser based on room area, target lux, fixture efficiency, and usage hours. No account required and no input data is stored on our servers. Results are planning estimates — for commercial projects, consult a qualified lighting designer or electrician.
Frequently Asked Questions
What is the difference between lux, lumens, and watts?
Lux measures how much light reaches a surface (illuminance). Lumens measure total light output from a source. Watts measure power consumption. For workspace planning, you typically start with a target lux level, convert to lumens using room area, then estimate LED wattage from lumens per watt.
How many lux do I need for office work?
Most general office tasks work well at 300–500 lux. Detailed work, design, or inspection tasks often benefit from 750–1000 lux. Meeting rooms and reception areas may use lower levels for comfort.
What color temperature is best for a workspace?
Neutral white around 4000K is a common choice for corporate offices. Home offices often feel more comfortable at 3000K–4000K. Design studios and video setups may prefer 4000K–5000K for color accuracy and alertness.
Are these calculators accurate enough for professional lighting design?
These tools provide simplified estimates for planning and budgeting. Final lighting design depends on fixture distribution, ceiling height, reflectance, glare control, and local standards. Consult a qualified lighting professional for critical projects.
How do I convert lux to lumens?
Multiply your target lux level by the area in square meters: lumens = lux × area (m²). For example, 500 lux over 20 m² requires about 10,000 lumens.