No Results
No results found for your search. Please try another term.
How to Convert from Phot [ph] to Lumen/square meter [lm/m^2]?
Easily convert illuminance values from the older phot unit to the SI derived lumen per square meter (lux) unit with this online converter. Ideal for lighting engineers, photographers, and horticulturists.
Please check your input. It must be a valid numeric value.
Phot [ph] to Lumen/square meter [lm/m^2] Conversion Table
| Phot [ph] | Lumen/square meter [lm/m^2] |
|---|
Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Phot [ph] | Lumen/square meter [lm/m^2] |
|---|
Explore More Illumination Units Converter
- How to convert from lux [lx] to phot [ph]?
- How to convert from phot [ph] to lux [lx]?
- How to convert from meter-candle [m*c] to phot [ph]?
- How to convert from phot [ph] to meter-candle [m*c]?
- How to convert from centimeter-candle [cm*c] to phot [ph]?
- How to convert from phot [ph] to centimeter-candle [cm*c]?
- How to convert from foot-candle [ft*c, fc] to phot [ph]?
- How to convert from phot [ph] to foot-candle [ft*c, fc]?
- How to convert from flame to phot [ph]?
- How to convert from phot [ph] to flame?
- How to convert from nox to phot [ph]?
- How to convert from phot [ph] to nox?
- How to convert from candela steradian/sq. meter to phot [ph]?
- How to convert from phot [ph] to candela steradian/sq. meter?
- How to convert from lumen/square meter [lm/m^2] to phot [ph]?
- How to convert from phot [ph] to lumen/square meter [lm/m^2]?
- How to convert from lumen/square centimeter to phot [ph]?
- How to convert from phot [ph] to lumen/square centimeter?
- How to convert from lumen/square foot [lm/ft^2] to phot [ph]?
- How to convert from phot [ph] to lumen/square foot [lm/ft^2]?
- How to convert from watt/sq. cm (at 555 nm) to phot [ph]?
- How to convert from phot [ph] to watt/sq. cm (at 555 nm)?
What Is This Tool?
This tool converts illuminance measurements from phot, a traditional non-SI unit, into lumen per square meter, the modern SI derived unit also known as lux. It serves professionals needing to update historical or technical lighting values into standard units for analysis, design, and verification.
How to Use This Tool?
- Enter the illuminance value in phot [ph]
- Select phot as the source unit and lumen per square meter as the target unit
- Execute the conversion to receive the equivalent value in lumen per square meter [lm/m²]
- Use the result to translate old or high-level lighting data into modern standardized units
Key Features
- Converts phot units to lumen per square meter with a fixed ratio
- Supports illuminance values representing high light levels such as direct sunlight
- Browser-based tool for quick and easy conversion
- Useful for photography, lighting engineering, horticulture, and architectural purposes
Examples
- 2 Phot [ph] converts to 20,000 lumen/square meter [lm/m^2]
- 0.5 Phot [ph] converts to 5,000 lumen/square meter [lm/m^2]
Common Use Cases
- Translating older illumination measurements in phot to SI units for lighting design
- Setting camera and lighting parameters in photography and cinematography
- Verifying and specifying lighting levels in indoor workspaces and public areas
- Controlling light delivery in horticulture and greenhouse environments
Tips & Best Practices
- Double-check data input to handle large magnitude differences accurately
- Prefer using lumen per square meter (lux) for modern and standardized illuminance values
- Be mindful of the historical context when working with phot units
- Utilize this conversion for consistency in lighting and exposure calculations
Limitations
- Phot is a non-SI unit primarily of historical interest and limited modern use
- Large scale difference (1 ph = 10,000 lm/m²) can lead to errors if numeric inputs are incorrect
- Ensure context is appropriate as phot may be confusing in current documentation
- Conversions do not adjust for measurement precision or errors inherent in original data
Frequently Asked Questions
- What is a phot in terms of illuminance?
- A phot is an older unit of illuminance equal to one lumen per square centimetre, or 10,000 lux.
- Why convert from phot to lumen per square meter?
- Converting allows updating older high-level illumination values to the modern SI derived unit for consistency and compliance in lighting and photographic standards.
- Is lumen per square meter the same as lux?
- Yes, lumen per square meter is equivalent to lux and is the standard SI derived unit to measure illuminance.
Key Terminology
- Phot [ph]
- An older, non-SI unit of illuminance equal to one lumen per square centimetre, used historically to express high levels of brightness.
- Lumen per square meter [lm/m²]
- The SI derived unit of illuminance equivalent to lux, quantifying the amount of visible light falling on a surface.
- Illuminance
- A measurement of luminous flux incident on a surface area, representing how much light a surface receives.