Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Pixels to Inches Converter (DPI-based)

Convert between pixels and inches at a chosen DPI/PPI. Standard defaults for web (96 DPI) and print (300 DPI). Bidirectional.

Direction

Amount

DPI / PPI

Custom DPI (overrides preset if > 0) (DPI) (optional)

Fill in the required fields to see your result.

Photography

Studio Lighting Ratio Calculator

Determine the exact fill light power needed to achieve a target lighting ratio in studio photography. Use this when balancing key and fill lights for portraits or product shots.

Key Light Power

Key Light Distance (meters)

Fill Light Distance (meters)

Desired Lighting Ratio

Fill in the required fields to see your result.

Key differences

	Pixels to Inches Converter (DPI-based)	Studio Lighting Ratio Calculator
Category	Photography	Photography
Inputs required	4	4
Result	Result	Required Fill Light Power (W)
What it does	Convert between pixels and inches at a chosen DPI/PPI. Standard defaults for web (96 DPI) and print (300 DPI). Bidirectional.	Determine the exact fill light power needed to achieve a target lighting ratio in studio photography. Use this when balancing key and fill lights for portraits or product shots.