Benzodiazepines are a group of prescription medicines that differ substantially in potency, duration of action, metabolism, and clinical use. Common benzodiazepines include alprazolam, clonazepam, diazepam, lorazepam, oxazepam, temazepam, chlordiazepoxide, bromazepam, midazolam, and triazolam.

Because these medications have different strengths, comparing milligram doses directly can be misleading. For example, the number of milligrams of one benzodiazepine cannot simply be assumed to have the same effect as the same number of milligrams of another. This is why clinicians sometimes use benzodiazepine equivalence tables expressed in terms of an approximate diazepam-equivalent dose.

The Benzo Conversion Calculator provides an approximate way to compare a dose of one selected benzodiazepine with another. It uses diazepam as the reference medication and calculates an estimated equivalent dose for the selected target medication.

The tool includes several commonly encountered benzodiazepines and allows you to select a source medication, enter a dose in milligrams, and select a target medication. The result is presented as an approximate equivalence estimate, not as an instruction to change medication.

This distinction is extremely important. Benzodiazepine equivalence is not an exact mathematical conversion. The 2025 ASAM-led Joint Clinical Practice Guideline specifically describes dose equivalents as approximate and notes that conversion depends on individual factors such as age, metabolism, and other medications.

What Is a Benzo Conversion Calculator?

A Benzo Conversion Calculator is a tool used to estimate the approximate equivalent dose between two benzodiazepines.

The calculator in this article uses a diazepam-equivalent reference system. Each medication in the calculator is assigned a conversion factor relative to a reference amount of diazepam.

The basic process is:

1. Select the benzodiazepine you are converting from.
2. Enter the dose in milligrams.
3. Select the benzodiazepine you want to compare it with.
4. Convert the source dose into an approximate diazepam-equivalent amount.
5. Convert that diazepam-equivalent amount into the selected target medication.
6. Display the estimated target dose.

The calculator supports:

• Alprazolam
• Clonazepam
• Diazepam
• Lorazepam
• Oxazepam
• Temazepam
• Chlordiazepoxide
• Bromazepam
• Midazolam
• Triazolam

The resulting number should be regarded as a reference estimate only.

Why Benzodiazepine Equivalence Is Used

Benzodiazepines have different potencies and pharmacokinetic characteristics. Consequently, comparing their doses by milligrams alone does not provide a meaningful measure of relative effect.

For example, 1 mg of one benzodiazepine does not necessarily have the same clinical effect as 1 mg of another.

A diazepam-equivalent framework gives clinicians and other healthcare professionals a common reference point for discussing relative benzodiazepine exposure.

The ASAM benzodiazepine tapering guideline includes an approximate dose-equivalence table specifically for informing decisions about transitions between benzodiazepines during tapering. It also emphasizes that these values are intended for guidance and that clinical decisions should be individualized.

Therefore, a conversion calculator can help explain the mathematics behind an equivalence table, but it cannot account for every factor that affects an individual patient's response.

How to Use the Benzo Conversion Calculator

Using the calculator involves three primary inputs.

Step 1: Select the Source Medication

Under Convert From, choose the benzodiazepine you currently want to evaluate.

Available options include:

• Alprazolam
• Clonazepam
• Diazepam
• Lorazepam
• Oxazepam
• Temazepam
• Chlordiazepoxide
• Bromazepam
• Midazolam
• Triazolam

The selected medication determines which conversion factor is used for the starting dose.

Step 2: Enter the Dose

Enter the dose in milligrams (mg).

For example, if the dose being evaluated is 1 mg, enter:

1

The calculator accepts positive dose values and can handle decimal quantities.

Do not interpret the calculator's ability to accept a particular decimal dose as a recommendation that such a dose is appropriate or available in a particular tablet or liquid formulation.

Step 3: Select the Target Medication

Under Convert To, choose the benzodiazepine you want to compare against.

For example:

Alprazolam → Diazepam

or:

Lorazepam → Diazepam

The calculator then applies its stored reference factors to estimate the corresponding target amount.

Step 4: Click Calculate

After entering the source medication, dose, and target medication, select Calculate.

The result provides:

• Equivalent dose
• Conversion direction
• An important approximation warning

If the source and target medications are the same, the calculator simply returns the entered dose rather than performing a conversion.

How the Benzo Conversion Formula Works

The calculator uses a two-step conversion system based on diazepam.

The first step converts the source medication into a diazepam-equivalent amount.

The second step converts that diazepam-equivalent amount into the target medication.

The general formula is:

Diazepam Equivalent = Source Dose × Source Conversion Factor

Then:

Target Dose = Diazepam Equivalent ÷ Target Conversion Factor

Therefore, the complete formula is:

Target Dose = (Source Dose × Source Conversion Factor) ÷ Target Conversion Factor

This is a mathematical representation of the reference table built into the calculator.

It should not be interpreted as a universal clinical dosing formula.

Diazepam as the Reference

The calculator uses 10 mg of diazepam as its reference amount.

The conversion values embedded in the calculator are:

These are the reference values incorporated into this particular calculator. They should not be treated as universally accepted or exact clinical equivalences.

Published equivalence tables can differ. For example, the 2025 ASAM guideline's appendix presents approximate equivalents and shows that some medications have different values across reference sources. Its table lists, for example, 1 mg alprazolam, 1 mg clonazepam, 2 mg lorazepam, 30 mg oxazepam, 15 mg temazepam, and 0.25 mg triazolam as approximate equivalents to 10 mg oral diazepam in the VA/DoD column.

This is an important reason not to treat any online conversion table as an exact prescribing instruction.

Benzo Conversion Example

Suppose the calculator is used to compare:

1 mg alprazolam → diazepam

According to the calculator's embedded reference values:

1 mg alprazolam ≈ 10 mg diazepam

The source conversion factor for alprazolam is 10.

The diazepam factor is 1.

Therefore:

Diazepam Equivalent = 1 × 10

Diazepam Equivalent = 10 mg

The calculator would display approximately:

10.000 mg

Again, this is an equivalence estimate based on the calculator's reference table, not an instruction to take 10 mg of diazepam.

Another Conversion Example

Consider:

0.5 mg clonazepam → diazepam

The calculator assigns clonazepam a factor of 20 because:

0.5 mg clonazepam ≈ 10 mg diazepam

Therefore:

0.5 × 20 = 10 mg diazepam

The estimated equivalent is:

10 mg diazepam

This illustrates why milligram amounts cannot be compared directly between benzodiazepines.

Example of a Conversion Between Two Non-Diazepam Medications

The calculator can also convert directly between two medications by using diazepam as an intermediate reference.

Suppose the source is:

1 mg alprazolam

and the target is:

clonazepam

The calculator first converts alprazolam into its diazepam-equivalent amount:

1 × 10 = 10 mg diazepam

The calculator assigns clonazepam a factor of 20, meaning 0.5 mg clonazepam corresponds to the calculator's 10 mg diazepam reference.

The target calculation is therefore:

10 ÷ 20 = 0.5 mg clonazepam

So the calculator produces an approximate result of:

0.500 mg clonazepam

This demonstrates the two-step nature of the calculation.

Understanding the Difference Between Equivalence and Conversion

The terms "equivalent dose" and "conversion" can sound more precise than they really are.

An equivalence estimate does not mean that two medications will produce exactly the same clinical experience in every person.

Differences can arise from:

• Individual metabolism
• Age
• Liver function
• Other medications
• Duration of treatment
• Previous benzodiazepine exposure
• Dosing schedule
• Route of administration
• Formulation
• Tolerance
• Individual sensitivity
• Underlying medical conditions

ASAM specifically notes that benzodiazepine conversion is not straightforward and can depend on patient characteristics and concurrent medications.

This is why an equivalence calculator should be viewed as an educational or reference tool rather than a substitute for individualized clinical assessment.

Benzodiazepine Equivalence Table: Why Sources Differ

One of the most important points when researching benzodiazepine conversion is that different published tables may not agree.

For example, the ASAM guideline provides a table comparing approximate dose equivalents from different sources. Some medications have substantially different estimates depending on the reference used.

A simplified comparison illustrates this issue:

This table is included to demonstrate why equivalence estimates should not be treated as exact. It does not establish that one table should be used for an individual patient.

For clinical decisions, healthcare professionals should use an appropriate current reference and consider the patient's individual circumstances.

Why Benzodiazepine Half-Life Matters

Benzodiazepines also differ in how long their effects and active metabolites persist.

Some have relatively shorter durations of action, while others have longer-lasting effects or active metabolites.

This distinction matters because two medications with a similar approximate potency can still behave differently in the body.

The ASAM guideline discusses pharmacokinetic properties and emphasizes that medication selection and transitions require consideration of individual patient factors.

Therefore, dose equivalence alone does not describe the entire clinical profile of a benzodiazepine.

Short-Acting and Long-Acting Benzodiazepines

Benzodiazepines are sometimes broadly discussed according to their duration of action.

Examples commonly considered longer-acting include diazepam and some agents with long-lasting active metabolites. Others, such as triazolam and midazolam, have comparatively shorter durations.

Duration can affect how frequently a medication is taken and how withdrawal symptoms may appear after dose reductions.

However, classification can depend on whether researchers consider parent-drug half-life, active metabolites, or clinical duration.

Consequently, simply converting one dose into another does not automatically establish an appropriate treatment schedule.

Benzodiazepine Tolerance and Physical Dependence

Longer-term benzodiazepine use can result in physical dependence.

Physical dependence is not identical to a substance use disorder. A person can develop physiological adaptation to a prescribed medication without having a benzodiazepine use disorder.

This distinction is important when discussing dose conversion and tapering.

The ASAM guideline emphasizes that benzodiazepines should not be abruptly discontinued in patients who are likely to be physically dependent and at risk for significant withdrawal. It recommends individualized, gradual dose reductions when tapering is appropriate.

Why You Should Not Use an Equivalence Result to Change Your Dose

A calculated equivalent amount should not be treated as a self-directed medication-switching instruction.

There are several reasons.

First, equivalence tables are estimates rather than exact measurements.

Second, a clinician may need to account for the indication for treatment, current dosing schedule, treatment duration, other medications, age, medical conditions, and previous response.

Third, changing benzodiazepines or reducing a benzodiazepine dose can produce withdrawal symptoms in physically dependent patients.

ASAM's current guideline recommends that tapering decisions be individualized and that benzodiazepines not be abruptly discontinued in patients at risk for significant withdrawal.

If you are considering changing, stopping, or tapering a benzodiazepine, discuss the plan with a qualified healthcare professional.

What Happens if the Source and Target Are the Same?

The calculator includes a special case for identical medications.

For example:

Diazepam → Diazepam

If you enter 5 mg, the calculator returns:

5.000 mg

The same applies to any other medication when the source and target selections match.

There is no need to apply a cross-medication conversion because the medication has not changed.

What Units Does the Calculator Use?

The calculator uses milligrams (mg) for dose input and output.

This is important because benzodiazepine formulations can come in different concentrations and dosage forms.

The calculator deals with the numerical milligram dose. It does not determine the appropriate tablet strength, liquid concentration, frequency, or route of administration.

Those factors require separate clinical consideration.

Factors That Can Affect Benzodiazepine Response

A numerical equivalence does not capture every factor that affects how someone responds to a benzodiazepine.

Important considerations may include:

Age

Older adults can respond differently to sedating medications, and medication accumulation may become more clinically important.

Liver Function

Some benzodiazepines undergo extensive hepatic metabolism. Differences in liver function can influence medication exposure.

Other Medications

Concurrent medicines can affect sedation, metabolism, or other aspects of benzodiazepine response.

Duration of Use

A person who has taken a benzodiazepine regularly for a long period may have developed physical dependence.

Individual Sensitivity

People can respond differently to the same dose.

Treatment Purpose

A medication prescribed for anxiety may be used differently from one prescribed for seizure management or another indication.

These considerations are among the reasons equivalence calculations should not be used independently to determine an individual's treatment.

Safety Considerations for Benzodiazepine Conversion

Benzodiazepines are prescription medicines with clinically important risks. ASAM notes that benzodiazepine use is associated with adverse events including falls, motor vehicle accidents, cognitive impairment, and overdose risk, particularly when benzodiazepines are combined with opioids.

For this reason, an online conversion calculator should be treated as an educational reference.

Do not use an estimated equivalent dose to:

• Start a prescription medication without medical advice
• Stop a prescribed benzodiazepine suddenly
• Increase or decrease a dose independently
• Replace a clinician's conversion plan
• Combine benzodiazepines without professional guidance
• Determine a personal tapering schedule

If you have been taking benzodiazepines regularly, especially for an extended period, discuss any planned medication change with your prescriber.

Benzo Conversion Calculator vs. a Clinical Assessment

A calculator performs arithmetic. A clinical assessment considers the individual.

The calculator can answer a question such as:

"According to this reference table, what dose of medication B corresponds approximately to this dose of medication A?"

A clinician may need to answer a much broader question:

"What medication, dose, schedule, and transition strategy is appropriate for this particular patient?"

Those are not the same question.

The first can be represented mathematically. The second requires medical history, examination where appropriate, medication review, clinical judgment, and monitoring.

Tips for Using the Calculator Responsibly

Use the Correct Source Medication

Double-check the medication selected under "Convert From."

Enter the Correct Dose

Use the actual prescribed dose when using the calculator for educational comparison.

Confirm the Target Medication

Make sure the target selection matches the medication you intend to compare.

Treat the Result as Approximate

The calculator itself identifies the result as an approximate equivalence estimate.

Compare Reference Sources Carefully

Different equivalence tables can produce different results. Current clinical guidance should take priority when making treatment decisions.

Consult a Healthcare Professional

Any actual medication transition, dose adjustment, or taper should be professionally supervised when clinically appropriate.

Frequently Asked Questions

1. What is a Benzo Conversion Calculator?

A Benzo Conversion Calculator estimates an approximate equivalent dose between selected benzodiazepines. This calculator uses diazepam as the reference medication and provides an estimated target dose based on its embedded equivalence values.

2. What medications are included in this calculator?

The calculator includes alprazolam, clonazepam, diazepam, lorazepam, oxazepam, temazepam, chlordiazepoxide, bromazepam, midazolam, and triazolam.

3. What is the formula for benzodiazepine conversion?

The calculator uses:

Target Dose = (Source Dose × Source Diazepam Factor) ÷ Target Diazepam Factor

The calculation uses diazepam as an intermediate reference.

4. Is benzodiazepine conversion exact?

No. Benzodiazepine dose equivalence is approximate. Current clinical guidance notes that conversion is not straightforward and can vary according to individual patient factors.

5. Why is diazepam used as a reference?

Diazepam is commonly used as a reference in benzodiazepine equivalence tables. Expressing different benzodiazepines in approximate diazepam-equivalent terms provides a common framework for comparing relative doses.

6. Can I use this calculator to change my medication dose?

No. The calculated result should not be used as a personal medication-switching or dosing instruction. Benzodiazepine transitions require individualized clinical assessment.

7. Why might two benzodiazepine conversion tables show different results?

Different published sources can use different reference methods and assumptions. The ASAM guideline itself presents approximate equivalents and notes differences among published references.

8. Does an equivalent dose have the same effect in everyone?

No. Age, metabolism, other medications, tolerance, treatment history, medical conditions, and other individual factors can affect response. ASAM specifically notes that individual factors influence benzodiazepine conversion.

9. Can benzodiazepines be stopped suddenly?

People who are physically dependent on benzodiazepines may experience significant withdrawal if treatment is abruptly stopped. ASAM recommends against abrupt discontinuation in patients who are likely to be physically dependent and at risk for significant withdrawal.

10. What should I do if I want to switch or taper a benzodiazepine?

Discuss the change with a qualified healthcare professional. Current ASAM guidance recommends individualized tapering when tapering is appropriate, with the pace adjusted according to the patient's response.

Final Thoughts

The Benzo Conversion Calculator provides a convenient mathematical way to compare selected benzodiazepine doses using a diazepam-equivalent reference system. By selecting a source medication, entering its dose, and choosing a target medication, you can obtain an approximate equivalent amount based on the calculator's built-in reference values.

The basic calculation is:

Target Dose = (Source Dose × Source Conversion Factor) ÷ Target Conversion Factor

The calculator includes ten benzodiazepines and uses diazepam as the common reference point.

However, benzodiazepine equivalence should always be interpreted cautiously. Published conversion tables can differ, and current clinical guidance describes dose equivalents as approximate rather than exact.

Most importantly, a mathematical equivalence is not the same as an individualized medical recommendation. Benzodiazepine transitions and tapering can involve important clinical considerations, and people who may be physically dependent should not abruptly discontinue treatment. ASAM recommends gradual, individualized approaches when tapering is clinically appropriate.

Use this calculator as an educational reference for understanding approximate benzodiazepine equivalence, while relying on a qualified healthcare professional for actual medication decisions.