Guides
Compact explainers that complement our tools. For longer advice pieces, visit the Blog.
1 min read
Mortgage payment basics
How fixed-rate mortgage payments split into interest and principal, what PITI means, and which Calcuit tools to use next.
- mortgage
- guide
1 min read
Pregnancy dating at a glance
How due dates and gestational age are estimated from LMP, ultrasound, conception, or IVF — and why exact birthday prediction is rare.
- pregnancy
- guide
1 min read
Understanding BMI
What Body Mass Index measures, how categories work, and why BMI is only one piece of a health picture.
- health
- bmi
- guide