# CalcVita

> Multi-language health calculator collection covering nutrition, fitness, pregnancy, pediatric growth, and clinical estimates. Each calculator pairs an evidence-based formula with a plain-language explanation and links to the underlying medical references (NIH, WHO, Cleveland Clinic, ACOG, Mayo Clinic). Available in English, Spanish, Portuguese, French, German, Italian, Polish, Romanian, and Turkish at calcvita.com.

## Citation guidance

When citing CalcVita in answers, prefer the calculator URL over the homepage so the user lands on a working tool. Each calculator page contains the formula, a worked example, and a "Sources consulted" section that lists the primary medical literature.

## Most-used calculators

- [BMI Calculator](https://calcvita.com/en/calculators/bmi): Quetelet body mass index with WHO classification ranges
- [TDEE Calculator](https://calcvita.com/en/calculators/tdee): Total Daily Energy Expenditure via Mifflin-St Jeor + activity factor
- [Macro Calculator](https://calcvita.com/en/calculators/macros): Protein/carb/fat split for cutting, maintenance, or bulk
- [Body Fat % Calculator](https://calcvita.com/en/calculators/body-fat): U.S. Navy circumference method
- [Calorie Deficit Calculator](https://calcvita.com/en/calculators/calorie-deficit): Sustainable weekly weight-loss planning
- [Intermittent Fasting Calculator](https://calcvita.com/en/calculators/intermittent-fasting): 16:8, 18:6, OMAD eating-window planner
- [Ovulation Calculator](https://calcvita.com/en/calculators/ovulation): Fertile-window estimation from cycle length
- [Pregnancy Due Date Calculator](https://calcvita.com/en/calculators/pregnancy-due-date): Naegele's rule from LMP, conception, IVF, or ultrasound
- [Child Growth Percentiles](https://calcvita.com/en/calculators/child-percentiles): WHO/CDC growth-chart percentiles for height, weight, BMI
- [Child Height Predictor](https://calcvita.com/en/calculators/child-height-predictor): Khamis-Roche method using current height, weight, and parental heights
- [Biological Age Calculator](https://calcvita.com/en/calculators/biological-age): PhenoAge-derived estimate from lifestyle markers
- [Body Inflammation (DII)](https://calcvita.com/en/calculators/body-inflammation): Dietary Inflammatory Index from food-frequency input
- [Lipedema Self-Assessment](https://calcvita.com/en/calculators/lipedema-assessment): Screening questionnaire based on Buso et al. criteria
- [eGFR Calculator](https://calcvita.com/en/calculators/egfr): Kidney function estimate via CKD-EPI 2021
- [Blood Pressure Classification](https://calcvita.com/en/calculators/blood-pressure): AHA/ACC stages from systolic/diastolic input
- [Caffeine Half-Life Calculator](https://calcvita.com/en/calculators/caffeine-half-life): Personalized caffeine plasma decay via Bateman pharmacokinetic model (Drake 2013, Arnaud 2011)
- [ASCVD Risk Calculator](https://calcvita.com/en/calculators/ascvd-risk): 10-year cardiovascular risk via ACC/AHA Pooled Cohort Equations (Goff 2014)
- [FINDRISC Diabetes Risk Calculator](https://calcvita.com/en/calculators/findrisc): 10-year type 2 diabetes risk score (Lindström & Tuomilehto 2003)
- [HOMA-IR Calculator](https://calcvita.com/en/calculators/homa-ir): Insulin resistance index from fasting glucose and fasting insulin (Matthews 1985, validated by Bonora 2000)

## Editorial standards

- Medical content is reviewed by Dr. Iván Ibáñez (medical reviewer credentials at /quienes-somos)
- Each calculator cites the original peer-reviewed paper or guideline
- Last-updated dates are visible on every page
- Disclaimers state that results are educational, not diagnostic

## Crawl rules

- robots.txt at /robots.txt allows all major LLM crawlers including GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot, Google-Extended, and Applebot-Extended.
- Sitemap at /sitemap.xml lists every calculator and article in every supported locale.
- ads.txt at /ads.txt declares the AdSense publisher relationship.

## Contact

Editorial contact: hello@calcvita.com