Thinking about Botox and wondering how many units you might need, and what it could cost? Different areas of the face use different amounts, so the total varies a lot from person to person. Use the free Botox units calculator below to tick the areas you are interested in and get an estimated unit range, plus an approximate price if you know the cost per unit.

How many units of Botox do you need?

The number of units depends on which area is being treated and how strong your muscles are. As a rough guide, the frown lines between the brows usually take 20 to 25 units, forehead lines 10 to 20 units, and crow's feet around 10 to 24 units for both sides. Larger muscles like the masseter (for jaw slimming) can take 40 to 60 units in total. Ticking your areas of interest above adds these typical ranges together.

How much does Botox cost?

Botox is usually priced per unit, and the price per unit varies by country, clinic and injector experience. Because the number of units drives the price, a small treatment like a lip flip is far cheaper than treating several areas. Enter your local price per unit in the calculator to see an estimated total. Always confirm the exact price and plan at a consultation.

What to know before your appointment

Botox is a prescription treatment that should only be given by a trained, licensed medical professional. At a consultation they will assess your muscles and facial movement and recommend a dose that suits you, which may differ from these general ranges. Results typically appear within a few days, settle after about two weeks, and last around three to four months before a top-up is needed.

Frequently asked questions

How many units of Botox for forehead and frown lines?

Forehead lines commonly take 10 to 20 units and frown lines between the brows 20 to 25 units. Treating both together often totals around 30 to 45 units, though your injector will tailor the dose to you.

How long does Botox last?

Most people see results last about 3 to 4 months. Over time, with regular treatments, some find the effect lasts a little longer.

Is the number of units the same for everyone?

No. Stronger muscles, larger areas and individual goals all change the dose. Men often need more units than women in the same area. Use these ranges as a guide and get a personalised plan from a licensed injector.