---
title: "Intranasal Peptide Calculator — Semax, Selank, PT-141 Spray Doses | BioHackingGuide"
url: https://biohackingguide.org/intranasal-calculator
description: "Free intranasal peptide spray calculator. Enter your vial or bottle details to get exact dose per spray for Semax, N-Acetyl-Semax, Selank, N-Acetyl-Selank, PT-141, Noopept, DSIP, and other nasal peptides. Two modes: vial reconstitution and pre-mixed bottle."
lang: en
---

## Structured data

```json
{
  "@context": "https://schema.org",
  "@type": "HowTo",
  "name": "How to Calculate Intranasal Peptide Spray Volumes",
  "description": "Calculate the exact liquid volume to add to a peptide vial for intranasal delivery, or determine the dose you receive from a pre-mixed bottle.",
  "url": "https://biohackingguide.org/intranasal-calculator",
  "step": [
    {
      "@type": "HowToStep",
      "name": "Enter peptide mass",
      "text": "Input the total mass of peptide in your vial (mg or mcg)."
    },
    {
      "@type": "HowToStep",
      "name": "Set your desired dose",
      "text": "Enter the dose you want per administration in mg or mcg."
    },
    {
      "@type": "HowToStep",
      "name": "Set spray volume",
      "text": "Enter the volume per spray of your nasal device (typically 0.05–0.14 mL)."
    },
    {
      "@type": "HowToStep",
      "name": "Choose sprays per dose",
      "text": "Select 1, 2, or 3 sprays per administration and get the recommended liquid to add."
    }
  ]
}
```