Women can use public tools where the tool’s stated scope fits. SHIFT’s main audience is adult men, so check the assumptions before using a result.
Not every calculator fits every situation
A result based on a male default, adult thresholds or a general planning formula may not be appropriate for you. Pregnancy, an eating disorder, childhood and certain medical conditions can require a different assessment. A calculator is not personal medical advice.
What you can do next
Read the tool’s inputs and limitations. Choose individual professional advice when your circumstances sit outside them.
Sources and further reading
Your next step
Explore the relevant guide or tool →
Answer and listed sources checked 2 October 2026.