How to convert MTTFd to FIT in Python using UliEngineering

You can easily convert MTTFd (Mean Time To Failure in days) to FIT (Failures In Time) using the UliEngineering Python library:

MTTFd_to_FIT.py

from UliEngineering.Reliability.Conversion import *
from UliEngineering.EngineerIO import *

# Convert 41,667 days to FIT
fit = MTTFd_to_FIT("41667d")
print(f"41,667 d = {fit:.0f} FIT")

# Convert 4,167 days to FIT
fit = MTTFd_to_FIT("4167d")
print(f"4,167 d = {fit:.0f} FIT")

from UliEngineering.Reliability.Conversion import *
from UliEngineering.EngineerIO import *

# Convert 41,667 days to FIT
fit = MTTFd_to_FIT("41667d")
print(f"41,667 d = {fit:.0f} FIT")

# Convert 4,167 days to FIT
fit = MTTFd_to_FIT("4167d")
print(f"4,167 d = {fit:.0f} FIT")

Example output

MTTFd_to_FIT_output.txt

41,667 d = 100 FIT
4,167 d = 1000 FIT

41,667 d = 100 FIT
4,167 d = 1000 FIT

FIT represents failures per billion hours. The conversion uses the formula: $FIT = \frac{10^9}{MTTFd \cdot 24 \cdot 60 \cdot 60}$.

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Example output

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