BBT Fertility Chart Overlay

Use this fertility chart to see your BBT pattern by overlaying any two fertility cycles. Pick each cycle you want to compare and your basal body temperature readings are charted for each tracked cycle day.

Member? Login to use this BBT overlay chart. After login, the list of cycles you've tracked will fill in above.

Not a member? Join now to use this free fertility overlay chart, plus track your BBT and CF for free, and tons more!

BBT Chart Overlay

Sample BBT Chart Overlay