Menstrual Cycle Calculator API

Menstrual Cycle Calculator is a period tracker API that predicts future menstrual cycles, fertile windows, and ovulation dates from the last period date and the average cycle and period length.

The Menstrual Cycle Calculator API provides a simple, reliable way to integrate menstrual cycle calculator functionality into your applications. Built for developers who need production-ready menstrual cycle calculator capabilities without the complexity of building from scratch.

View API Details →

Method Platform

Available on: JitPack

Quick Start

Using JavaScript

async function callMenstrualCycleCalculatorAPI() {
    try {
        const params = new URLSearchParams({
            last_period: '2024-01-01',
            cycle_length: 28,
            period_length: 5,
            cycles: 3
        });

        const response = await fetch(`https://api.apiverve.com/v1/menstrualcycle?${params}`, {
            method: 'GET',
            headers: {
                'x-api-key': 'YOUR_API_KEY_HERE'
            }
        });

        const data = await response.json();
        console.log(data);
    } catch (error) {
        console.error('Error:', error);
    }
}

callMenstrualCycleCalculatorAPI();

Using cURL

curl -X GET "https://api.apiverve.com/v1/menstrualcycle?last_period=2024-01-01&cycle_length=28&period_length=5&cycles=3" \
  -H "x-api-key: YOUR_API_KEY_HERE"

Get your API key: https://apiverve.com

📁 For more examples, see the examples folder

Installation

Choose your preferred programming language:

📦 NPM (JavaScript/Node.js)

npm install @apiverve/menstrualcycle

View NPM Package → | Package Code →

🔷 NuGet (.NET/C#)

dotnet add package APIVerve.API.MenstrualCycleCalculator

View NuGet Package → | Package Code →

🐍 Python (PyPI)

pip install apiverve-menstrualcycle

View PyPI Package → | Package Code →

💎 Ruby (RubyGems)

gem install apiverve_menstrualcycle

View RubyGems Package → | Package Code →

🐘 PHP (Packagist)

composer require apiverve/menstrualcycle

View Packagist Package → | Package Code →

🎯 Dart (pub.dev)

dart pub add apiverve_menstrualcycle

View pub.dev Package → | Package Code →

🤖 Android (JitPack)

implementation 'com.github.apiverve:menstrualcycle-api:1.0.0'

Package Code →

🐹 Go

go get github.com/apiverve/menstrualcycle-api/go

Package Code →

Why Use This API?

Feature	Benefit
Multi-language SDKs	Native packages for JavaScript, Python, C#, Go, and Android
Simple Integration	Single API key authentication, consistent response format
Production Ready	99.9% uptime SLA, served from 24 global regions
Comprehensive Docs	Full examples, OpenAPI spec, and dedicated support

Documentation

🏠 API Home: Menstrual Cycle Calculator API
📚 API Reference: docs.apiverve.com/ref/menstrualcycle
📖 OpenAPI Spec: openapi.yaml
💡 Examples: examples/

What Can You Build?

The Menstrual Cycle Calculator API is commonly used for:

Web Applications - Add menstrual cycle calculator features to your frontend or backend
Mobile Apps - Native SDKs for Android development
Automation - Integrate with n8n, Zapier, or custom workflows
SaaS Products - Enhance your product with menstrual cycle calculator capabilities
Data Pipelines - Process and analyze data at scale

API Reference

Authentication

All requests require an API key in the header:

x-api-key: YOUR_API_KEY_HERE

Get your API key: https://apiverve.com

Response Format

Every APIVerve endpoint returns the same envelope — check status, then read data:

{
  "status": "ok",
  "error": null,
  "data": { ... }
}

Example Response

A real response from the Menstrual Cycle Calculator API:

{
  "status": "ok",
  "error": null,
  "data": {
    "last_period_date": "2024-01-01",
    "cycle_length": 28,
    "period_length": 5,
    "cycles_calculated": 3,
    "cycles": [
      {
        "cycle_number": 1,
        "period": {
          "start_date": "2024-01-01",
          "end_date": "2024-01-05",
          "duration_days": 5
        },
        "ovulation": {
          "date": "2024-01-15",
          "day_of_cycle": 14
        },
        "fertile_window": {
          "start_date": "2024-01-10",
          "end_date": "2024-01-15",
          "duration_days": 6
        },
        "pms_phase": {
          "start_date": "2023-12-21",
          "end_date": "2023-12-31"
        },
        "cycle_phases": {
          "menstrual": {
            "start": "2024-01-01",
            "end": "2024-01-05",
            "description": "Menstruation"
          },
          "follicular": {
            "start": "2024-01-06",
            "end": "2024-01-14",
            "description": "Follicular phase - preparing for ovulation"
          },
          "ovulation": {
            "date": "2024-01-15",
            "description": "Ovulation - most fertile day"
          },
          "luteal": {
            "start": "2024-01-16",
            "end": "2024-01-28",
            "description": "Luteal phase - preparing for next period"
          }
        },
        "status": "past",
        "days_until": null,
        "days_ago": 715
      },
      {
        "cycle_number": 2,
        "period": {
          "start_date": "2024-01-29",
          "end_date": "2024-02-02",
          "duration_days": 5
        },
        "ovulation": {
          "date": "2024-02-12",
          "day_of_cycle": 14
        },
        "fertile_window": {
          "start_date": "2024-02-07",
          "end_date": "2024-02-12",
          "duration_days": 6
        },
        "pms_phase": {
          "start_date": "2024-01-18",
          "end_date": "2024-01-28"
        },
        "cycle_phases": {
          "menstrual": {
            "start": "2024-01-29",
            "end": "2024-02-02",
            "description": "Menstruation"
          },
          "follicular": {
            "start": "2024-02-03",
            "end": "2024-02-11",
            "description": "Follicular phase - preparing for ovulation"
          },
          "ovulation": {
            "date": "2024-02-12",
            "description": "Ovulation - most fertile day"
          },
          "luteal": {
            "start": "2024-02-13",
            "end": "2024-02-25",
            "description": "Luteal phase - preparing for next period"
          }
        },
        "status": "past",
        "days_until": null,
        "days_ago": 687
      },
      {
        "cycle_number": 3,
        "period": {
          "start_date": "2024-02-26",
          "end_date": "2024-03-01",
          "duration_days": 5
        },
        "ovulation": {
          "date": "2024-03-11",
          "day_of_cycle": 14
        },
        "fertile_window": {
          "start_date": "2024-03-06",
          "end_date": "2024-03-11",
          "duration_days": 6
        },
        "pms_phase": {
          "start_date": "2024-02-15",
          "end_date": "2024-02-25"
        },
        "cycle_phases": {
          "menstrual": {
            "start": "2024-02-26",
            "end": "2024-03-01",
            "description": "Menstruation"
          },
          "follicular": {
            "start": "2024-03-02",
            "end": "2024-03-10",
            "description": "Follicular phase - preparing for ovulation"
          },
          "ovulation": {
            "date": "2024-03-11",
            "description": "Ovulation - most fertile day"
          },
          "luteal": {
            "start": "2024-03-12",
            "end": "2024-03-24",
            "description": "Luteal phase - preparing for next period"
          }
        },
        "status": "past",
        "days_until": null,
        "days_ago": 659
      }
    ],
    "current_status": {
      "phase": "Unknown",
      "description": "",
      "next_period": null,
      "days_until_next_period": null
    },
    "averages": {
      "cycle_length": 28,
      "period_duration": 5,
      "days_between_periods": 28
    },
    "disclaimer": "This calculator provides estimates only. Actual cycles may vary. Consult a healthcare provider for medical advice."
  }
}

Support & Community

🏠 API Home: Menstrual Cycle Calculator API
💬 Support: https://apiverve.com/contact
🐛 Issues: GitHub Issues
📖 Documentation: https://docs.apiverve.com
🌐 Website: https://apiverve.com

Contributing

We welcome contributions! Please see CONTRIBUTING.md for guidelines.

Security

For security concerns, please review our Security Policy.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

Built with ❤️ by APIVerve

apiverve_menstrualcycle

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