How to Calculate Semaglutide Dose

What is Semaglutide Dose?

The Semaglutide Dose Calculator determines the correct weekly injection dose of semaglutide based on your current titration phase, indication (Ozempic for diabetes or Wegovy for weight loss), and any dose adjustments for tolerability. It tracks milligrams per injection and pen selection.

Formula

Weekly Dose (mg) = Titration Phase Dose as per FDA schedule

D: Current Dose (mg/week) — Your currently prescribed weekly dose of semaglutide
W: Treatment Week (weeks) — Number of weeks since starting semaglutide
P: Pen Type (mg capacity) — The prefilled pen variant being used
I: Indication (text) — Diabetes (Ozempic) or weight management (Wegovy)

Step-by-Step Guide

1Select your semaglutide brand (Ozempic or Wegovy) and current titration week
2The calculator displays your current dose, pen type, and clicks per injection
3Review the next scheduled dose increase and when it should occur
4Note any dose adjustment flags if experiencing persistent side effects

Worked Examples

Input

Wegovy, week 10 of treatment

Result

Current dose: 1.0 mg/week (Phase 3 of 5). Using the 1.0 mg pen. Next increase to 1.7 mg at week 13.

Input

Ozempic, week 6 of treatment, tolerating well

Result

Current dose: 0.5 mg/week (Phase 2). Using the 0.25/0.5 mg pen. Next increase to 1.0 mg at week 9 if glycemic control needs improvement.

Common Mistakes to Avoid

✕Using the wrong pen for your dose — the 0.25/0.5 mg pen cannot deliver 1.0 mg doses
✕Confusing Ozempic doses (max 2.0 mg) with Wegovy doses (max 2.4 mg)
✕Injecting semaglutide more than once per week or changing the injection day without the proper 2-day minimum interval

Frequently Asked Questions

Can I switch between Ozempic and Wegovy?

Both contain semaglutide, but switching requires a new prescription because they have different approved indications, dose ranges, and titration schedules. Your provider may switch you if your treatment goal changes (e.g., from diabetes management to weight loss). Insurance coverage may also differ between the two.

What if I cannot tolerate the dose increase?

If you experience severe nausea, vomiting, or diarrhea at a higher dose, your provider may extend your time at the current dose for an additional 4 weeks before re-attempting the increase. In some cases, a lower maintenance dose is used if the full target dose is not tolerated.

Ready to calculate? Try the free Semaglutide Dose Calculator

Try it yourself →