Calculate maximum drawdown from your own figures.
Calculated in your browser. No account required. Illustrative estimate. Review the assumptions before using the result.View calculation table
How this calculation works
Drawdown = (Peak value − Trough value) ÷ Peak value
Enter the labelled inputs. Percent fields use 5 for 5%. Maximum is the largest peak-to-trough loss.
A worked example
Portfolio values in time order: 100,120,90,110,80. Maximum drawdown: 33.333333%.
Assumptions and limitations
Maximum is the largest peak-to-trough loss. All monetary inputs must use one currency and time period unless conversion is explicit. Manual inputs only; no live prices or official rule tables.
Common questions
Why can my actual result differ?
Maximum is the largest peak-to-trough loss. All monetary inputs must use one currency and time period unless conversion is explicit. Manual inputs only; no live prices or official rule tables.
Are my inputs saved?
The calculator code processes inputs within your browser and does not send them to our server or save them in browser storage. Downloads and copied summaries remain under your control.