Vet Calculator Plus (VetCalc+) is a fully referenced tool containing over 30 calculators designed for vets, nurses, technicians and students. Easy to calculate, save and send results and highly customiable.

Fluid calculators

  • Basic fluid rates
  • Fluid rate with volume deficit corrections
  • Potassium infusions
  • Serum osmolality
  • Constant rate infusions (CRIs) (includes loading doses and 30+ drugs)
  • Free water deficit

Pharmacy calculators

  • Drug dosages (dose required and amount (ml, g, & tablets))
  • Body surface area
  • Emergency drug calculator

Hematology calculators

  • Total blood volume
  • Maximum blood sample volume
  • Transfusions (transfusion volume required)
  • Phlebotomy
  • Erythrocyte indices (MCV, MHC, MCHC)

Conversion calculators

  • Convert between SI & conventional units (over 70 agents)
  • Convert Temperatures (℃ & ℉ including normal ranges)
  • Convert weights (kg, g, mg, μg, oz., lb.)
  • Convert volumes (liter, dL, ml, fl. oz., teaspoon, tablespoon, cc.)
  • Convert pressures (mmHg, kPa, Pa, Bar, mBar, psi, atm, cmH2O, mmH2O)

Nutrition calculators

  • Daily energy requirements
  • Amount to feed
  • Dry matter %
  • Animal’s ideal weight (in kg, stone & pounds)

Blood gas calculators

  • Acid-base
  • Anion gap
  • A-a gradient
  • Bicarbonate deficit

Date calculators

  • Animal’s age from date
  • Due date (parturition estimation)

Cardiac calculators

  • Echocardiography (calculate & compare to expected values for dogs and cats)
  • Heart beat counter

Other calculators

  • Anesthetic flow rates (Bain, circle, Humphrey ADE (A), Lack, MacGill, Mini-Lack, T-Piece)
  • Dilutions (conc. based on added volume or volume to add for desired conc.)
  • Pain score (Glasgow CMPS-SF) for dogs
  • Coma score for dogs


The app includes values for the following species:

Alpaca, cat, cattle, chicken, chinchilla, dog, ferret, gerbil, goat, guinea pig, hamster, horse, pig, rabbit, rat, sheep.
Other features

  • Save calculated results
  • Share & Send calculated results
  • Add/delete own drugs (iOS & Android)
  • Use kg or lb. (in all calculators)
  • Different giving/drip sets (10, 15, 20 & 60 drops per ml)
  • Change units from SI to US/Conventional
  • Change units/scales/formula used in many calculators
  • Pre-set values (customizable) for many species
  • Specify your own values for different species and drugs (i.e. blood volumes, drug concentrations etc.)
  • App2SD & Backup/Restore supported on Android
A list of included species and drugs and the default values used in the app can be found here.

iOS screenshots

Android screenshots

Get it on Google Play Currently unavailable for iOS.