Color Temperature Calculator
Convert Kelvin to Mired and calculate gel correction values.
Inputs
K
Results
Mired Value
313
Mired Shift from Daylight134
CTO Equivalent102%
CTB Equivalent0%
Warm/Cool Index (-2 to 2)-1
How to Use This Calculator
- Enter the Color Temperature in Kelvin — daylight is ~5600 K, tungsten is ~3200 K.
- Read the Mired Value (1,000,000 ÷ K) — gels and filters are rated in mireds for precision.
- Use the Mired Shift to calculate how much correction gel is needed to match a target source.
- Check the CTO/CTB Equivalent (%) to select the right Lee or Rosco gel from your kit.
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