Footcandles to Lux Calculator

Understanding light intensity can be confusing, especially when you’re dealing with different units like footcandles and lux. Whether you’re designing lighting for a workspace, measuring indoor plant lighting, or checking compliance with building codes, our Footcandles to Lux Calculator helps you convert units with precision and speed.

What Is a Footcandle?

A footcandle (fc) is a non-metric unit of illuminance. It measures the amount of light falling on a surface one foot away from a one-candela light source. Footcandles are commonly used in the United States, especially in architecture, photography, and horticulture.

Try this tool: Candela to Lumen Calculator

What Is Lux?

Lux (lx) is the metric equivalent of footcandles. It represents the number of lumens per square meter. Lux is widely used globally, especially in scientific and engineering fields. Just like footcandles, it measures the illuminance or brightness on a surface.

How Many Lux Are in One Footcandle?

One footcandle is equal to 10.764 lux.

• 1 fc = 10.764 lx

This conversion factor is the foundation of our Footcandles to Lux Calculator. Whether you’re moving from imperial to metric or vice versa, this is the number to remember.

How to Convert Lux to Footcandles?

To convert from lux to footcandles:

• 1 lx = 0.092903 footcandles

Our tool simplifies this conversion, so you don’t need to remember complex formulas or do manual calculations.

Footcandles to Lux Calculator: How It Works

Simply enter a value in footcandles, and the tool instantly converts it into lux. You can also input lux to get the footcandle value. The calculator is accurate, fast, and ideal for both professional and educational use.

Why Use This Calculator?

This tool is perfect for:

• Architects and engineers comparing international lighting standards
• Photographers adjusting studio lighting
• Horticulturists measuring plant light requirements
• Building managers and OSHA compliance teams
• Anyone needing precise light unit conversion between lux and footcandles

Common Questions Answered

What is the difference between a footcandle and a lux?

• Footcandle measures lumens per square foot
• Lux measures lumens per square meter
• 1 footcandle = 10.764 lux

How to convert footcandles to lumens?

• You need the area of the surface:
• Lumens = Footcandles × Area (in square feet)

How many lux are in a candle?

• This depends on distance, but approximately 1 candle power at 1 meter = 1 lux

Is candle the same as foot-candle?

• No. Candela (candle) is a measure of light intensity; footcandle is a measure of light falling on a surface.

How many lux is a normal lamp?

• A standard indoor lamp may emit anywhere from 100 to 500 lux, depending on the bulb and distance.

What is considered bright in footcandles?

• Office space: 20–50 fc
• Surgery room: 1000+ fc
• Parking lot: 5–10 fc
• Warehouse: 30–50 fc

How Many Lumens Are 40 Footcandles?

To determine lumens:

• Lumens = 40 footcandles × area (in square feet)
• If your area is 10 sq. ft., then:
• 40 × 10 = 400 lumens

Related Questions:

• How bright is 5000 lumens? Extremely bright, ideal for large areas.
• Is 3000 lumens bright? Suitable for well-lit rooms.
• How many lumens in 1 footcandle? It varies with area, but lumens = fc × area.

How Bright Are 10 Footcandles?

Ten footcandles offer low to medium illumination. It’s equivalent to:

• 10 footcandles = 107.64 lux

This is commonly used in corridors, walkways, and dimly lit areas.

More Brightness-Related Queries:

• How many lumens is a 60-watt bulb? Around 800 lumens
• What is 20 footcandles of light? About 215 lux
• How bright is sunlight in footcandles? Over 10,000 fc
• How many footcandles is a 100-watt bulb? Roughly 1500 lumens over 10 sq. ft = 150 fc
• Are bigger candles brighter? Not necessarily—it depends on the flame intensity and spread

What Is the Formula for Calculating Lux?

• Lux = Lumens / Area (in square meters)
• Footcandles = Lumens / Area (in square feet)

To convert, use:

• Lux = Footcandles × 10.764

Key Lighting Comparison Keywords Covered

• This article helps users looking for answers related to:
• Difference between footcandles and lux
• How to convert lux to footcandles and vice versa
• How bright is X lumens or footcandles
• Footcandles for parking lots, plants, offices, and homes
• What is considered bright in both units
• Real-world lux examples like torchlight, sunlight, bulbs

Try the Footcandles to Lux Calculator Now

Convert footcandles to lux or lux to footcandles instantly with our reliable tool. No manual formula, no confusion—just clear, accurate light conversions tailored to your specific needs.