How Much Protein Powder Per Day (and Per Scoop)? UK Guide

Buy a tub of protein and the first practical question is: how much am I supposed to take? The scoop looks big, the label talks in grams, and it is easy to either under-dose and waste the effort or over-dose and waste the powder. This guide gives you the real numbers, per day and per scoop, and shows you how to set a target that fits your body rather than a one-size-fits-all scoop count.

How much protein powder per day?

For most people, one to two scoops a day is plenty. Protein powder is a convenient top-up, not a food group: the aim is to hit your total daily protein from meals and shakes combined. A widely used target for people training regularly is around 1.6g of protein per kg of body weight. An 80kg person is therefore aiming for roughly 128g of protein a day, and one or two scoops covers 20 to 50g of that, with the rest coming from food.

If your meals are already protein-rich, chicken, eggs, dairy, fish, you might need only one scoop, or none. If you skip breakfast or eat mostly carbs, two scoops can be the easiest way to close the gap.

How much protein is in one scoop?

A standard scoop is 25 to 30g of powder, which is not the same as 25 to 30g of protein. How much actual protein you get depends on the type:

• Whey concentrate: about 20 to 24g of protein per 30g scoop (roughly 70 to 80% protein).
• Whey isolate: about 23 to 27g per scoop (90%+ protein). See our isolate vs concentrate guide for the difference.
• Plant blends: typically 20 to 25g per scoop, varying by source.

How many calories are in a scoop?

A scoop of whey concentrate is roughly 100 to 130 calories. Isolate is a little lower, often 90 to 110 calories, because the filtering removes most fat and carbohydrate. This is why isolate suits a strict calorie deficit. Mass gainers are a different category entirely, running to several hundred calories per serving because they add carbohydrate deliberately.

How to work out your own target

Rather than guessing scoops, work backwards from your body weight and goal, then let powder fill whatever your meals miss. Our free protein intake calculator does this in a few seconds and points you to the cheapest match. As a rule of thumb:

• General health: around 1.2g per kg per day.
• Building muscle or in a deficit: around 1.6 to 2.2g per kg per day.

Since powder is priced by the bag but used by the gram, the real question is cost per serving. Work it out with our cost per serving guide, or jump straight to the ranked options below.

Best value per 25g

Bulk Pure Whey Protein

2.5kg bag

Budget-friendly Informed Sport tested whey from Bulk with 50+ flavours. Consistently among the cheapest per serving in the UK.

Buy Pure Whey Protein →Live price at Bulkor compare all UK prices →

Best value per 25g

Bulk Pure Whey Protein

2.5kg bag

Pros

• + Among cheapest UK whey options
• + Huge 50+ flavour range
• + 22g protein per 30g scoop
• + Informed Sport batch tested

Cons

• – 70-75% protein purity only
• – Some flavours overly artificial
• – Can cause bloating if lactose-sensitive

Pros

• Among cheapest UK whey options
• Huge 50+ flavour range
• 22g protein per 30g scoop
• Informed Sport batch tested

Cons

• 70-75% protein purity only
• Some flavours overly artificial
• Can cause bloating if lactose-sensitive

Buy Pure Whey Protein →Live price at Bulkor compare all UK prices →

●Nutrition per scoop · 22.7g protein in 32g▼

Protein makes up 71%

of this 32g scoop · 120 kcal total

22.7g

4.8g

Protein22.7g

Carbs4.8g

Fat1.1g

Other3.4g

Popular 25g-scoop pick

MyProtein Impact Whey Protein Powder

900g bag

UK's bestselling whey concentrate with 82g protein per 100g. Regularly discounted 40-60% - never pay full price.

Buy Impact Whey Protein Powder →Live price at MyProteinor compare all UK prices →

Popular 25g-scoop pick

MyProtein Impact Whey Protein Powder

900g bag

Pros

• + 82g protein per 100g high purity
• + Cheapest per serving during sales
• + Huge 60+ flavour range
• + 5kg bags for long-term savings

Cons

• – Full price is poor value
• – Needs discount code to compete
• – Reformulations change taste occasionally

Pros

• 82g protein per 100g high purity
• Cheapest per serving during sales
• Huge 60+ flavour range
• 5kg bags for long-term savings

Cons

• Full price is poor value
• Needs discount code to compete
• Reformulations change taste occasionally

Buy Impact Whey Protein Powder →Live price at MyProteinor compare all UK prices →

●Nutrition per scoop · 21.6g protein in 30g▼

Protein makes up 72%

of this 30g scoop · 113 kcal total

21.6g

Protein21.6g

Carbs2.7g

Fat1.8g

Other3.9g

Can you have too much protein powder?

For healthy people, protein above your needs is mostly wasted money and calories rather than a health risk. There is no extra muscle benefit beyond roughly 1.6 to 2.2g per kg. The exception is anyone with kidney disease, who should follow medical advice on protein rather than a general target. If you are regularly taking four or five scoops a day, you are almost certainly better off buying the cheapest powder per serving and eating more whole-food protein instead.

Protein dosage FAQs

How much protein powder should I take per day?

One to two scoops for most people, delivering 20 to 50g of protein, as a top-up towards a daily total of around 1.6g per kg of body weight from food and shakes combined.

How much protein is in one scoop of whey?

A 25 to 30g scoop gives about 20 to 24g of protein for concentrate and 23 to 27g for isolate. Check protein per 100g on the label, as it varies by brand.

How many calories are in a scoop of protein powder?

Roughly 100 to 130 calories for whey concentrate and 90 to 110 for isolate. Mass gainers are far higher because they add carbohydrate.

Can you have too much protein powder?

For healthy people, excess protein is wasted money rather than dangerous, with no muscle benefit above about 2.2g per kg. Those with kidney disease should follow medical advice.