Relationship & fun calculators
By using our calculators, you agree to our Terms of Use.
Lighthearted relationship math: deterministic love and friendship percentages from names, next half-birthday date, days until an anniversary repeats, and how long you have been together in years and months. Entertainment only — never a substitute for communication or professional advice.
5 tools in this section
Love
Enter two names for a playful love compatibility percentage. Entertainment only — a name hash game, not scientific or relationship advice.
Friendship Compatibility
Compare two names for a playful friendship compatibility score. Entertainment only — not a measure of real friendship quality.
Half Birthday
Find your next half birthday — six calendar months after your birth date. Date math for fun celebrations, not astrological meaning.
Anniversary Countdown
Count days until your next relationship or wedding anniversary from the original date. Calendar countdown — not a reminder service.
Relationship Duration
Calculate how long you have been together from a start date to today or any end date. Calendar duration — same math as date difference, relationship framing.