Welcome to NMCalc!

Your go-to resource for calculators tailored to nuclear professionals. Our tools cover Nuclear Medicine, Radiation Safety, Radiopharmacy, and Research workflows — making complex calculations simple and accessible.

Physics & Dosimetry

Decay Calculations 4 tools

• Real-Time Radioactivity Decay Monitor
• Radioactivity Decay Calculator
• Time to Activity Calculator
• Multi Timepoint Decay Calculator

Exposure & Shielding 5 tools

• Inverse Square Law Exposure Calculator
• Exposure Calculation from Activity
• Radiation Exposure Unit Conversion
• Radioactivity Unit Conversion
• Shielding Calculator

Radiopharmacy Tools 5 tools

• MAA Kit Activity Planner
• Moly Breakthrough Calculator
• Mo-99/Tc-99m Elution Yield Estimator
• Re-Elution Yield Estimator
• Radiopharmaceutical Dispensing Planner

Clinical Tools

Endocrine System 2 tools

• Thyroid Uptake Calculator (Desktop)
• Thyroid Uptake Calculator (Mobile)

Genitourinary System 1 tool

• Renal Split Function Calculator

Cardiovascular System 1 tool

• MPS Scoring Tool - 17 Segment Model

GastroIntestinal System Coming soon

Tools in development…

QC & Other Tools

QC of NM Instruments 1 tool

• Spatial Resolution Calculator - FWHM and FWTM

General Utilities 2 tools

• Body Surface Area Calculator
• Infusion Rate Calculator

Under Development

Smartphone Radiation Detector Beta

• Camera-based ionizing radiation Detector

Turn your mobile device into a portable survey meter using camera-based particle detection.

🌍 Global Visitor Map

Live · Updated on page load

—Visits This Month

—Countries

Empowering Nuclear Professionals Worldwide · NMCalc © 2025