Period Calculator

Predict your next period.

Days until next period (days) 16

Step-by-step with your numbers:

1. Values used:

2. Cycle length = 28 days

3. Days since last period started = 12 days

4. Days until next period = Cycle length - Days since last period started = 28 - 12 = 16days

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Estimate when your next period starts. Informational only.

FAQ

Irregular?

If cycles vary, this is only a rough guide.