mg ↔ units

Selank mg to units converter

Set your Selank vial concentration once, then flip in either direction between milligrams and U-100 syringe units.

iPhone · Free to download

Last updated: May 13, 2026

Vial (mg)

Diluent (mL)

Dose (mg)

0.300

units

12.0

0.120

Concentration: 2.50 mg/mL (assumes a U-100 insulin syringe).

Selank quick reference: mg ↔ units

Bidirectional reference for a 5 mg Selank vial reconstituted with 2 mL BAC water (concentration 2.50 mg/mL).

Dose (mg)	Dose (mcg)	U-100 units
0.15	150	6
0.3	300	12
0.6	600	24
1.2	1200	48

Read across in either direction. The mg ↔ units relationship is linear at a fixed concentration — change vial size or BAC water and every row in this table moves.

Worked example

Selank mg ↔ units, both directions on one vial

Working from one 5 mg Selank vial mixed with 2 mL of bacteriostatic water → 2.50 mg/mL.
mg → units: 0.3 mg ÷ 2.50 × 100 = 12 units.
units → mg: 12 units ÷ 100 × 2.50 = 0.3 mg — round-trip exact, that's how you sanity-check a logged value.
mcg flip: 0.3 mg = 300 mcg, useful when the protocol writes the dose below the 1 mg threshold.
Every row here is specific to this vial; reconstitute with a different volume and you start from a different concentration.

Scenarios people actually run into

Three things that come up logging Selank

Protocol says 0.3 mg. Syringe says 12 units. Those are the same draw on this vial — and only on this vial.
Someone online says "Selank dose is 20 units." That number is meaningless without their vial mg and their diluent mL. Ignore the units number and convert from the mg.
Logged a dose in units last week and a dose in mg today. The mg ↔ units flip on this page is how you confirm both entries describe the same actual draw.

Same-category neighbor

Selank next to Semax

Both sit in the Cognitive bucket — here's the mg to-units math side by side on each one's example vial.

	Selank	Semax
Example dose	0.3 mg	0.4 mg
Concentration	2.50 mg/mL	2.50 mg/mL
Units to draw	12	16

Want the full breakdown? Semax reference →

Selank is a peptide that people explore for its potential effects on anxiety and brain function, often talked about in nootropic circles. It is a synthetic version of a natural peptide found in the spleen called tuftsin, but with a more stable structure that allows it to last longer in the body. Early-stage studies have reported its influence on the balance of certain brain chemicals and proteins involved in nerve growth, which may be linked to mood, learning, and stress resilience. This page covers what the research says about Selank, common ways people track it, and how to use the app’s calculators to stay organized.

How the Selank mg ↔ units converter works

Selank doses are written in mcg (250, 300, 400). This converter shows U-100 units at your vial concentration so daily protocol steps land cleanly on the syringe.

The formula in both directions: mg = mL × concentration mg/mL, and units = mL × 100 on a U-100 syringe. With a 2.5 mg/mL Selank solution, 0.3 mg comes out to 12 units, and 12 units comes out to 0.3 mg. The converter handles the unit flip automatically so you never multiply or divide in your head while holding a syringe.

Concentration is the input that changes the answer most. A 5 mg vial diluted with 1 mL is twice as concentrated as the same vial diluted with 2 mL, which means the same dose draws half as many units. That is the single biggest source of converter confusion: a remembered unit count from an old vial does not transfer to a new vial reconstituted with different water volume.

Many people find it easier to measure peptide doses using the “unit” markings on an insulin syringe rather than trying to measure in milliliters (mL). The mg to Units Conversion Calculator is built to make this simple. It bridges the gap between the peptide’s weight in milligrams (mg) and the volume measurement of units. An insulin syringe is a highly accurate tool, and its unit markings are clear and easy to read. By converting your dose into this format, you can ensure a much higher degree of precision. For your Selank vial, you’ll tell the calculator you have 5 mg of peptide and that you’ve added 2 mL of diluent (which is 200 units).

With that information, the calculator determines exactly how much Selank is in each single unit mark on the syringe. In our example, 5 mg divided by 200 units means each unit contains 0.025 mg of Selank. Now, when you enter your desired dose of 0.3 mg, the calculator will perform the final conversion for you: it divides your target dose by the per-unit concentration (0.3 mg ÷ 0.025 mg/unit) to tell you that you need to draw the solution up to the 12-unit mark on your insulin syringe. This single piece of information—"12 units"—is simple, actionable, and easy to log in Peptide Pilot.

This conversion is vital for consistent tracking, especially with a peptide like Selank where doses are often small and precision matters. A tiny error in measuring milliliters could result in a significantly different dose, which could alter the subtle effects you’re trying to observe. Using units removes that ambiguity. Whether you’re preparing a subcutaneous injection or measuring out a batch to put into a nasal sprayer, this calculator ensures that the number of milligrams you intend to use is the number of milligrams you actually measure. It’s a crucial step for reliable self-monitoring and gathering meaningful data about your personal response.

Tracking Selank unit counts

Tracking your Selank journey in Peptide Pilot helps you stay organized and see the patterns in how you respond. Start by creating a new entry for your 5 mg vial of Selank in the "My Peptides" section. When you reconstitute it with 2 mL of diluent, you can input these numbers into the app. Peptide Pilot will automatically calculate the concentration for you, so you don’t have to do the math manually every time. This becomes the foundation for all your tracking. Each day, when you take your dose, you simply log it. For instance, if you’re taking 0.3 mg, the app can help you measure that as 12 units on your syringe. You can record the time, the amount, and even the administration method—whether it was a nasal spray or a subcutaneous injection. This creates a clean, simple record of your usage over time.

The real power of tracking comes from adding subjective notes to each dose entry. Selank’s effects are often subtle and cumulative, making a journal feature invaluable. After you log your 0.3 mg dose, use the app’s tagging or notes feature to record how you feel. Are you feeling calmer than usual? Is your focus sharper at work? Is your mood more stable? You could create tags like #focus, #calm, or #anxietydown. You can also rate your anxiety or mood on a numerical scale each day. Over a 14-day cycle, you can then scroll back through your log and see a clear story. You might notice, for example, that your self-reported anxiety scores started consistently dropping around day four or that your focus was best in the hours immediately following your dose. This data is purely for your personal insight.

Peptide Pilot also helps manage your protocol schedule. You can set up reminders for your daily dose so you don’t forget, which is crucial for maintaining the consistent levels needed for Selank’s effects to build. The app can also help you track your cycle length. If you’re following a "14 days on, 21 days off" protocol, you can easily see when you started and when it’s time to take a break. It also keeps track of how much peptide is left in your vial, so you know when you’re running low. By offloading all the calculations and record-keeping to the app, you can focus more on observing your personal experience and less on managing the logistics of your peptide tracking.

Common Selank mg ↔ units mistakes

Eyeballing doses instead of using a properly marked syringe for measurement.

Frequently asked questions about Selank mg ↔ units

What's the formula behind this Selank mg ↔ units converter?

Both directions use the same concentration. Going mg → units: (dose mg ÷ concentration mg/mL) × 100. Going units → mg: (units ÷ 100) × concentration. For this Selank example at 2.50 mg/mL, 0.3 mg works out to about 12 units, and the same number of units converts back to 0.3 mg. Selank dose ranges overlap with Semax — verify which peptide is in the vial before drawing.

Why does my Selank unit count not match a number I read online?

Almost always because the other source assumed a different vial concentration. A "Selank dose = 20 units" tip is meaningless without knowing whether the vial was reconstituted with 1, 2, or 3 mL of water. The converter on this page asks for your actual vial mg and diluent mL so the answer reflects your vial, not someone else's. Selank dose ranges overlap with Semax — verify which peptide is in the vial before drawing.

Does the Selank converter handle mcg as well as mg?

Yes — 1 mg equals 1,000 mcg, and the converter does the unit flip automatically when you switch the input. This matters for peptides where typical doses sit below 1 mg: a 250 mcg Selank dose displayed as 0.25 mg is the same number, just easier to read. Selank dose ranges overlap with Semax — verify which peptide is in the vial before drawing.

When would I convert Selank units back to mg?

Most often when checking a dose someone else recorded. Logs and protocols sometimes write the dose in units (because it's what shows on the syringe), other times in mg (because it's what the protocol step is named). The reverse direction lets you confirm a logged unit count actually matches the planned mg target before drawing the next dose. Selank dose ranges overlap with Semax — verify which peptide is in the vial before drawing.

Related on Peptide Pilot

Save your Selank vial in the app

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