Period Calculator
PulseGate's liveness check found it on 3 Oct 2026; it has been in the index since 25 Jul 2026. How this is checked
Period Calculator is a free web-based tool that predicts the next six menstrual periods, ovulation day, and most fertile window. It addresses the need for quick cycle estimates without accounts or data sharing. Users enter the first day of their last period, average cycle length between 21 and 45 days, and average period length between one and ten days to receive instant results.
Inferred · not functionally tested
Overview
5 featuresPurpose: Accurately predicting upcoming periods, ovulation and fertile days without sharing personal health data.
Inferred · not functionally tested
Audience: People who menstruate
Inferred · not functionally tested
Functions: scheduling
Inferred · not functionally tested
Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown
Recorded constraints: pricing: freemium · license: Proprietary · platforms: WEB · deployment: browser
Constraint provenance is unknown; confirm requirements with the publisher.
Record sources: periodtools.com. These links do not verify the individual claims.
Period Calculator is a Medical & telehealth project. Inferred · not functionally tested: Accurately predicting upcoming periods, ovulation and fertile days without sharing personal health data. Inferred · not functionally tested: Period Calculator is a consumer product aimed at people who menstruate. Basis unknown · not verified: Period Calculator follows a freemium model. Basis unknown · not verified: It runs on the web.
Period Tools builds and maintains Period Calculator. Inferred · not functionally tested: Among its 5 catalogued features are Period Prediction, Ovulation Calculator, and Fertile Window.
Summary written by a language model from the project’s public pages.
Tasks: Inferred · not functionally tested
- Period Prediction
- Ovulation Calculator
- Fertile Window
- Cycle Tracker
- Private Calendar
Topics: Inferred · not functionally tested
Built with & integrations
- Next.js
- x-nextjs-prerender header · /_next/static/ in the HTML · __next_f in the HTML
- Vercel
- x-vercel-id header · x-vercel-cache header
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
Frequently asked questions about Period Calculator
- What is Period Calculator?
- Inferred · not functionally tested: Accurately predicting upcoming periods, ovulation and fertile days without sharing personal health data. It is catalogued under Medical & telehealth on PulseGate.
- Who is Period Calculator for?
- Inferred · not functionally tested: Period Calculator is a consumer product built for people who menstruate.
- Is Period Calculator free?
- Basis unknown · not verified: Yes — there is a free tier, with paid plans for advanced use.
- What platforms does Period Calculator run on?
- Basis unknown · not verified: Period Calculator runs on the web.
- Is Period Calculator still active?
- PulseGate's liveness check found it on 3 Oct 2026.
- What are alternatives to Period Calculator?
- Similar projects tracked by PulseGate include Period Calendar Period Tracker, Period Tracker Period Calendar, and Period Calculator.Period Calendar Period TrackerPeriod Tracker Period CalendarPeriod Calculator
- Who develops Period Calculator?
- Period Calculator is developed by Period Tools.
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