MME Calculator

Calculate Morphine Milligram Equivalents for opioid medications and assess risk levels

Calculate Morphine Milligram Equivalents

Reference standard opioid (MME = 1)

Single dose amount for each administration

Multiple tablets/units taken together

How many separate dosing times per day

MME Calculation Results

0.0
MME per Dose
0.0
MME per Administration
0.0
Total Daily MME

Calculation:

Single dose MME = 0 mg × 1 = 0.0 MME

Per administration = 0.0 MME × 1 = 0.0 MME

Daily total = 0.0 MME × 1 = 0.0 MME/day

Important Medical Disclaimer

This calculator is for educational purposes only. MME calculations should never replace clinical judgment. Always consult with qualified healthcare professionals for medication management and opioid prescribing decisions.

Example Calculation

Patient Taking Oxycodone

Medication: Oxycodone 10mg tablets

Dosing: 1 tablet, 3 times per day

Conversion factor: Oxycodone = 1.5 MME per mg

MME Calculation

Single dose MME = 10 mg × 1.5 = 15 MME

Daily MME = 15 MME × 3 doses = 45 MME/day

Risk Level: Low risk (< 50 MME/day)

MME Risk Guidelines

< 50 MME/day

Lower risk

Monitor for effectiveness and side effects

!

50-90 MME/day

Increased risk

Consider additional monitoring

≥ 90 MME/day

High risk

Serious consideration for dose reduction

Quick Reference

Morphine1.0
Oxycodone1.5
Hydromorphone4.0
Fentanyl patch2.4
Codeine0.15
Tramadol0.1

Conversion factors to morphine milligram equivalents

Understanding Morphine Milligram Equivalents (MME)

What are MMEs?

Morphine Milligram Equivalents (MME) provide a standardized way to compare the potency of different opioid medications. By converting all opioids to their morphine equivalent, healthcare providers can better assess risk and make informed prescribing decisions.

Why Calculate MME?

  • Assess overdose risk and safety
  • Compare potency across different opioids
  • Guide safe prescribing practices
  • Support clinical decision-making

Calculation Formula

MME = Dose × Conversion Factor × Frequency × Doses per Day

Special Considerations

Methadone

Has variable conversion factors based on total daily dose due to non-linear pharmacokinetics.

Fentanyl Patches

Measured in mcg/h and provide continuous 72-hour delivery of medication.