AnthroCalc
Anthropometric Calculator
Free · Designed for iPad. Not verified for macOS.
The AnthroCalc app calculates percentiles and Z-scores for length/height, weight, weight-for-length/height, body-mass index, and head circumference for typically growing children (using WHO or CDC references); for children with a number of syndromes (Turner, Down, Prader–Willi, Russell–Silver, Noonan and Klinefelter); and for preterm infants (using Fenton 2013 and 2025, INTERGROWTH-21st, or Olsen references). The app also performs specialized calculations of blood pressure (using NIH 2004 or AAP 2017 references), extended obesity measures, waist circumference, arm circumference, triceps and subscapular skinfolds, target (midparental) height, predicted adult height, and height velocity for healthy children. Citations are provided for each reference range used for the calculations.
more Improved age calculation.
3.0.2 Feb 9
Have added new growth charts for boys with Klinefelter syndrome from Davis SM, et al. Pediatrics 2025;156(6):e2025072193. Some UI improvements.
3.0.1 Jan 26
Have added the ability to enter age either with dates or directly to all screens. Improved UI and speed. Updated copyright.
3.0.0 Jan 19
On the “CDC” screen, have added “gradual Z-scores” for height, weight and BMI for children 2–5 years, which smooth the transition from WHO values back to CDC [Pediatrics 2025;156(3):e2025070697)]; this can be switched on and off on the “Settings” screen. Have added the ability to directly enter the age (years, months and days) on the “WHO” and “CDC” screens, instead of having to enter date of birth and date of measurement (which is still the default). Have made some calculation speed enhancements in “WHO,” “CDC,” and “Predicted Adult Height” screens.
2.12.4 12/06/2025
On the “CDC” screen, have added “gradual Z-scores” for height, weight and BMI for children 2–5 years, which smooth the transition from WHO values back to CDC [Pediatrics 2025;156(3):e2025070697)]; this can be switched on and off on the “Settings” screen. Have added the ability to directly enter the age (years, months and days) on the “WHO” and “CDC” screens, instead of having to enter date of birth and date of measurement (which is still the default). Have made some calculation speed enhancements in “WHO,” “CDC,” and “Predicted Adult Height” screens.
2.12.3 12/04/2025
On the “CDC” screen, have added “gradual Z-scores” for height, weight and BMI for children 2–5 years, which smooth the transition from WHO values back to CDC [Pediatrics 2025;156(3):e2025070697)]; this can be switched on and off on the “Settings” screen. Have added the ability to directly enter the age (years, months and days) on the “WHO” and “CDC” screens, instead of having to enter date of birth and date of measurement (which is still the default). Will continue to do this on other screens with time. Have made some small bug fixes in “Predicted Adult Height” screen.
2.12.2 11/22/2025
On the “CDC” screen, have added “gradual Z-scores” for height, weight and BMI for children 2–5 years, which smooth the transition from WHO values back to CDC [Pediatrics 2025;156(3):e2025070697)]; this can be switched on and off on the “Settings” screen. Have added the ability to directly enter the age (years, months and days) on the “WHO” and “CDC” screens, instead of having to enter date of birth and date of measurement (which is still the default). Will continue to do this on other screens with time. Have made some small bug fixes in “Predicted Adult Height” screen.
2.12.1 11/18/2025
On the “CDC” screen, have added “gradual Z-scores” for height, weight and BMI for children 2–5 years, which smooth the transition from WHO values back to CDC [Pediatrics 2025;156(3):e2025070697)]; this can be switched on and off on the “Settings” screen. Have added the ability to directly enter the age (years, months and days) on the “WHO” and “CDC” screens, instead of having to enter date of birth and date of measurement (which is still the default). Will continue to do this on other screens with time. Have made some small bug fixes in “Predicted Adult Height” screen.
2.12.0 11/17/2025
On the “CDC” screen, have added “gradual Z-scores” for height, weight and BMI for children 2–5 years, which smooth the transition from WHO values back to CDC [Pediatrics 2025;156(3):e2025070697)]; this can be switched on and off on the “Settings” screen. Minor improvement tweaks.
2.11.1 11/11/2025
On the “CDC” screen, have added “gradual Z-scores” for height, weight and BMI for children 2–5 years, which smooth the transition from WHO values back to CDC [Pediatrics 2025;156(3):e2025070697)]; this can be switched on and off on the “Settings” screen. Minor improvement tweaks.
2.11.0 11/10/2025
Have added the 2025 (third-generation) Fenton Preterm Growth Charts and fixed minor calculation bugs for several screens.
2.10.5 09/28/2025
Have added the 2025 (third-generation) Fenton Preterm Growth Charts and fixed minor calculation bugs for several screens.
2.10.4 09/23/2025
Have added the 2025 (third-generation) Fenton Preterm Growth Charts and fixed a minor calculation bug for this.
2.10.3 09/18/2025
Have added the 2025 (third-generation) Fenton Preterm Growth Charts and fixed a minor calculation big for this.
2.10.2 09/17/2025
Have added the 2025 (third-generation) Fenton Preterm Growth Charts.
2.10.1 06/24/2025
Have added the 2025 (third-generation) Fenton Preterm Growth Charts.
2.10.0 06/22/2025
Updated support website.
2.9.1 05/12/2025
Have improved readability and uniform appearance of screens. Minor bug fixes. Now remembers choice of exact or direct gestational age input on the premature infant screens from previous session.
2.9.0 03/13/2025
Updated copyright.
2.7.3 01/02/2025
Updated terms.
2.7.2 11/16/2024
Slight rewording of some BMI-derived parameters.
2.7.1 11/17/2023
Increased accuracy in the newborn period.
2.7.0 10/15/2023
Improvements in screen navigation.
2.5.2 08/13/2023
No longer requires an active Internet connection for calculations. Have improved the accuracy of calculations on the “Noonan Syndrome” and “INTERGROWTH-21st Newborn Size” screens. Have improved navigation between screens sharing the same data. Minor improvements in appearance.
2.5.1 05/28/2023
No longer requires an active Internet connection for calculations. Have improved the accuracy of calculations on the “Noonan Syndrome” and “INTERGROWTH-21st Newborn Size” screens. Have improved navigation between screens sharing the same data.
2.5.0 05/24/2023
Improved age calculation.
more Version 3.0.2 Feb 9
Data Not Collected The developer does not collect any data from this app.
