Tox conversion calculator
Use this practitioner tool when you need a quick Botox to Speywood unit comparison, plus a fast dilution reference in the same place. It is designed to help you check the numbers quickly, then move back to safe product and treatment review.
Two-way conversion
Start from either side and see the matching value instantly.
Quick dilution check
Check units per 0.1 mL and 0.05 mL from the vial and final volume you enter.
Use with care
Keep it as a quick reference and always check the product information before treatment.
Use it when you want a fast number check before you go back to your own product information, treatment plan, or training notes.
Botox-unit side
Start here if you want to work from a Botox or Vistabel unit reference.
Speywood-unit side
Start here if you want to work from Azzalure or Alluzience-style Speywood units.
Use the calculator
Check the unit comparison quickly.
If you need a fast reference point while reviewing your notes, preparing for training, or checking numbers in clinic, use the calculator here. If you also want a quick units-per-volume check, the dilution reference sits just below.
Start here if you use Botox-style units
Working from Botox units?
Start here if you want to convert a Botox or Vistabel unit reference into the Speywood-unit equivalent quickly.
Start here if you use Speywood units
Working from Speywood units?
Start here if you want to convert Azzalure or Alluzience-style Speywood units back into a Botox-unit reference.
Keep this as a quick reference, not a final decision
Check the product information before treatment
Use this as a quick reference only. Product labels treat units as product-specific, so always check the relevant SmPC, your protocol, and your own clinical judgement before treating.
Use the second calculator when you need it
Need a quick dilution check as well?
Use the second calculator on this page to see a quick units-per-volume reference from the vial size and final volume you are working with.
Calculator
Botox-unit to Speywood-unit comparison
Enter units on either side and the matching value will update automatically.
Enter the units you want to convert from a Botox or Vistabel-style reference.
Enter the units you want to convert from an Azzalure or Alluzience-style Speywood reference.
Clinical caution
Use this as a quick reference only. Product labels treat botulinum toxin units as product-specific, so always check the relevant SmPC, your supervision arrangements, and your patient-specific plan before treatment.
Dilution quick reference
Check the units-per-volume view from your own vial and final volume.
Enter the units in the vial and the final total volume you are working with. The calculator will show a quick reference for units per 0.1 mL, units per 0.05 mL, and the approximate volume for 1 unit or 4 units.
Why it is useful
Keep both checks in one place.
If you are checking unit conversion, you may also want a fast dilution reference at the same time. This page gives you both without making you jump between resources.
Use your own setup
Enter the numbers you are actually working with.
Products, vial sizes, and clinic protocols may vary. This calculator simply turns the numbers you enter into a quick reference.
Dilution calculator
Tox dilution quick reference
Enter the units in the vial and the final total volume you are working with.
Common unit presets
Common volume presets
Units per 0.1 ml
4
Units per 0.05 ml
2
ml for 1 unit
0.025
ml for 4 units
0.1
Practical note
This section only turns the numbers you enter into a quick units-per-volume reference. It does not recommend a preparation method or treatment plan.
Check the source
Keep the reference close to the official product information.
If you want to double-check the source information behind your numbers, use the official references below.
Training next steps
If you need more confidence with injectables, go to training next.
A quick calculator can help with the numbers. If you still need more confidence with anti-wrinkle treatments or injectable progression, the next step is proper training and guidance.
Level 7 injectable training
If you want to build advanced injectable knowledge and a stronger qualification base, explore the full Level 7 pathway.
View Level 7 trainingFoundation anti-wrinkle training
If you are still building confidence with anti-wrinkle treatments, start with practical training before relying on quick-reference tools.
View foundation training
Online anti-wrinkle theory
If you want to refresh the theory before your next practical step, use the online foundation course as a flexible study option.
View online theoryNeed help choosing the right injectable training?
Speak with admissions before you book.
If you are comparing anti-wrinkle training, online theory, or Level 7 progression, use an advisor call to work out the right next step for your background and training goals.
Quick answers
What to keep in mind when you use the calculator.
Who is this calculator for?
This tool is for qualified practitioners, injectable trainees, and clinic teams who need a fast unit comparison reference. It is not intended for consumer use.
Does this replace product information or prescribing guidance?
No. Product labels treat units as product-specific. Use this tool as a quick reference, then confirm the relevant product information, your clinical protocol, and your patient-specific plan before treatment.
Which products does this comparison focus on?
This page focuses on the Botox-unit to Speywood-unit comparison commonly used when checking Botox or Vistabel against products such as Azzalure or Alluzience.
What does the dilution calculator do?
It shows a quick units-per-volume reference based on the units in the vial and the total final volume you enter. It is there to help with the maths, not to replace product-specific treatment guidance.
What if I need training before offering anti-wrinkle treatments?
If you still need training, the better next step is to speak with admissions or view the relevant anti-wrinkle and Level 7 training routes instead of relying on a calculator alone.