About This Calculator
This calculator determines the fold change between an initial and final value, showing how many times a quantity has increased or decreased.
How It Works
- Enter the Initial Value.
- Enter the Final Value.
- The calculator divides the final value by the initial value to get the fold change.
Fold Change =
Final ValueInitial Value
Frequently Asked Questions
What does a fold change of 1 mean?
It means there was no change between the initial and final values.
Can fold change be negative?
No, fold change is a ratio and typically reported as a positive number. For decreases, values are often expressed as fractions or reciprocal fold change.
How is it different from percentage change?
Fold change is a ratio (e.g., 2× or 0.5×), while percentage change shows the relative difference as a percent.