Body Weight Reference
Reference weight, BMI, %IBW, adjusted/nutritional body weight, and chart-note support.
Body weightBMIChart note
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RD calculators by workflow
Start with free adult calculators or explore Pro nutrition-support workflows. RDCalc shows assumptions, formulas, and copy-ready documentation support without requiring PHI.
RDCalc is a calculation and documentation aid. Do not enter PHI. Verify outputs against clinical judgment, formula labels, and local or institutional policy.
Available now
Calculators available now
Start with the active calculators below. Planned workflows are listed separately and are not active until reviewed and implemented.
Estimated Needs
Adult energy, protein, and fluid estimates with free core methods and Pro advanced methods.
EnergyProteinFluids
Open calculatorTube Feeding Regimen Analysis
Review tube-feeding regimen values from user-entered formula label and regimen details.
EnteralFormula labelWater
Open calculatorPremix Parenteral Nutrition Analysis
Analyze adult premix PN and optional lipid provision from current user-entered product-label values.
PN/TPNPremix labelsOptional lipid
Open calculatorRenal Nutrition Needs Review
Document adult renal nutrition calculation-weight basis with energy/protein support.
CKDMaintenance HDWeight basis
Open calculatorQuick guide
Which calculator should I choose?
Pick the task that matches what you’re reviewing.
Need reference weight, BMI, or %IBW?Body Weight ReferenceNeed adult energy, protein, or fluid estimates?Estimated NeedsNeed Penn State adult critical-care energy methods?Estimated Needs with Pro accessReviewing a tube-feeding regimen?Tube Feeding Regimen AnalysisReviewing an adult premix PN regimen?Premix Parenteral Nutrition AnalysisReviewing adult renal nutrition calculation-weight basis?Renal Nutrition Needs ReviewLooking for wounds, pediatrics, pregnancy/lactation, or other specialty support?Planned workflows
Planned workflows
Planned and under-review workflows
These workflows are shown for orientation only. They are not active calculators and require separate review before release.
Under review / planned advanced methods
PlannedObesity / Critical Care Needs
Measured Energy / Indirect Calorimetry Support
Tube Feeding Modular Protein
Tube Feeding Free Water / Flush Gap
Tube Feeding Formula / Regimen Comparison
Future specialty scope
PlannedSpecialty areas remain future scope and are not part of the current adult-first calculator set.
Wound / Pressure Injury
Pediatrics
Pregnancy / Lactation
Free + Pro
Free tools stay open. Pro unlocks implemented advanced workflows.
Body Weight Reference and core Estimated Needs remain available without an account. Pro unlocks implemented advanced methods and nutrition-support workflows. Planned expansions require review before release.
Safety + privacy
Professional-use boundaries
RDCalc is designed for lightweight calculator workflows without patient identifiers. Use outputs as calculation and documentation support, not as a substitute for clinical judgment.
No PHI
No patient profiles
No saved calculation history
No uploads
Professional-use only
Verify formula labels and local or institutional policy
Need more context?
Review the professional-use, privacy, and review-status pages for RDCalc boundaries and current implementation posture.