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Protein & budget
What does each gram of protein actually cost?
Gym culture loves chicken breast; accountants love lentils. Both can be right - if you know the health trade-offs hiding behind the price tag.
Figures are illustrative UK supermarket prices (value-mid tier, June 2026). We compare cost per 100 g of protein, not cost per 100 g of food - so oily fish and cheese are judged fairly against chicken and beans.
Poultry & eggs
The gym-goer defaults - lean, familiar, easy to cook in bulk.
🍗
Best value
Chicken thighs (skinless)
31g
protein / 100g food
£0.55
per 100g protein
Strong protein; slightly more fat than breast if skin on.
Best value bird - marinate and roast for flavour without pricey cuts.
High protein
Batch cook
🐔
Mid shelf
Chicken breast
31g
protein / 100g food
£0.85
per 100g protein
Very lean; dries out if overcooked.
Pay more per gram of protein than thighs - worth it if you prefer white meat.
Lean
🥚
Best value
Eggs
13g
protein / 100g food
£0.70
per 100g protein
~6 g protein per egg; choline and B12 in the yolk.
Per-100 g looks pricey - per meal they are one of the cheapest complete proteins.
Breakfast
Quick
Fish & seafood
Omega-3 and iodine - rotate with plants to spread cost.
🐟
Mid shelf
Tinned tuna (in water)
26g
protein / 100g food
£0.95
per 100g protein
Convenient; useful for lunches.
Mind mercury if eaten daily - 2-3 tins a week is a common sensible cap.
Cupboard
🐠
Premium
Salmon fillet
24g
protein / 100g food
£1.80
per 100g protein
Oily fish - vitamin D and omega-3.
Premium price; treat night or mix with lentil dishes across the week.
Omega-3
Plants & pulses
Where budget nutrition actually wins - fibre bundled with protein.
🫘
Best value
Red lentils (dry)
25g
protein / 100g food
£0.25
per 100g protein
Fibre hero; counts as one 5-a-day portion max per day.
Needs cooking - but dhal, soup and bolognese stretchers are unbeatable value.
Vegan
Fibre
🥫
Best value
Chickpeas (tinned)
8g
protein / 100g food
£0.35
per 100g protein
Low fat; useful in curries and salads.
Lower protein density than meat - pair with grains for complete amino acids.
Vegan
🧈
Best value
Firm tofu
17g
protein / 100g food
£0.60
per 100g protein
Low saturates; absorbs marinades well.
Texture divides households - press, cornflour coat, and crisp in a hot pan.
Vegan
Dairy & powders
Calcium plus protein - and the supplement aisle when time is tight.
🥛
Mid shelf
Greek yogurt (0%)
10g
protein / 100g food
£0.65
per 100g protein
Calcium bonus; check added sugar on flavoured pots.
Great snack - less satisfying than a chicken dinner for main-meal protein.
Snack
🧀
Premium
Mature cheddar
25g
protein / 100g food
£1.40
per 100g protein
Protein yes - saturates and salt add up fast.
Flavour booster, not a primary protein strategy.
Treat
🥤
Mid shelf
Whey protein powder
80g
protein / 100g food
£1.20
per 100g protein
Convenient post-gym.
Not needed if meals already hit 20-30 g protein - food first.
Supplement
Quick wins
Compare cost per 100 g of protein - not per pack on the shelf.
Lentils and eggs often beat premium meat on value per gram.
Powders are optional - food-first protein covers most gym weeks.
Build a week around this advice
Trust & sources
Written for Meal Pilot by Dr James, MBBS - a practising NHS GP in the United Kingdom. The information below reflects UK public-health guidance (including NHS Eatwell principles and SACN reference intakes). It is educational, not a personal prescription: always follow advice tailored to you by your own GP, practice nurse or registered dietitian.
Author
Dr James, MBBS
Reviewed by
Meal Pilot editorial team with GP review
Last reviewed
June 2026
Beyond the price tag
Red and processed meat can fit a balanced week, but UK guidance suggests limiting processed meat. Oily fish twice a week supports vitamin D and omega-3. Pulses add fibre most animal proteins lack. Powders are a tool, not a food group.
Full protein nutrition guide
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