About Calctiva
Calctiva provides clear, practical calculators for everyday questions.
Practical answers without an account
Calctiva provides practical calculators without requiring an account. The calculation comes first, with assumptions and advanced options available when they matter.
The Date Calculator is the first tool in a catalogue that will grow deliberately around useful, well-defined questions.
Browser-first by design
Calculator inputs are processed in your browser and are not sent to Calctiva. This keeps a simple calculation fast and limits unnecessary data collection.
Clear about limits
Calctiva explains assumptions and relevant edge cases instead of presenting results without context. Important results should still be checked against the rule, agreement, or source that governs your decision.
Calctiva is built in Bosnia and Herzegovina for users worldwide.