Grocery Budget Calculator
Plan your monthly grocery budget based on household size. See per-person and per-meal costs with eating-out adjustments.
Enter your household size and total food budget to see a breakdown by person, meal, and week, with eating-out costs factored in.
How Much Should You Spend on Groceries?
The average UK household spends £60-£80 per person per week on food and drink. But "average" covers everything from budget shoppers doing the Aldi weekly haul to families buying organic everything from Waitrose. Your actual number depends on household size, dietary needs, and how often you eat out.
Here's the rule of thumb that works for most people: groceries should be 10-15% of your take-home pay. A household earning £3,000/month after tax should budget £300-£450 for food. That's the grocery budget — eating out comes on top.
The biggest trap? Not tracking eating-out spending separately. A £15 takeaway twice a week adds £120/month — that's a 30% bump on a £400 grocery budget, and most people don't even notice it.
UK Grocery Spending by Household Size
| Household | Budget (Weekly) | Moderate (Weekly) | Comfortable (Weekly) |
|---|---|---|---|
| Single adult | £30-£40 | £45-£60 | £70-£90 |
| Couple | £50-£70 | £80-£100 | £120-£160 |
| Family of 3 | £70-£90 | £100-£130 | £150-£200 |
| Family of 4 | £85-£110 | £120-£160 | £180-£250 |
| Family of 5 | £100-£130 | £140-£190 | £210-£300 |
What this means for you: Budget tier means Aldi/Lidl own-brand basics with batch cooking. Moderate is a mix of own-brand and branded items from major supermarkets. Comfortable includes organic options, convenience meals, and premium brands.
Where Your Food Money Goes
| Category | % of Grocery Budget | Typical Monthly (Family of 4) |
|---|---|---|
| Meat, fish & protein | 25-30% | £120-£150 |
| Fruit & vegetables | 15-20% | £75-£100 |
| Dairy & eggs | 10-12% | £50-£60 |
| Bread, cereals & grains | 10-12% | £50-£60 |
| Snacks & drinks | 10-15% | £50-£75 |
| Household & cleaning | 8-10% | £40-£50 |
| Condiments, oils & basics | 5-8% | £25-£40 |
What this means for you: Protein is the biggest expense category. Swapping some meat meals for beans, lentils, or eggs can cut your grocery bill by 15-20% without sacrificing nutrition.
Six Ways to Cut Your Grocery Bill
Plan meals before shopping
Meal planning reduces food waste by 25% and impulse spending by 20%. Check what you already have, plan 5-7 meals, then write a list and stick to it.
Shop at discount supermarkets
Aldi and Lidl are consistently 20-30% cheaper than Tesco and Sainsbury's for a comparable weekly shop. The quality gap has narrowed significantly.
Buy own-brand staples
Own-brand pasta, rice, tinned goods, and cleaning products are 30-50% cheaper and often made in the same factories as branded equivalents.
Batch cook and freeze
Cooking in bulk saves both time and money. A £6 batch of chilli makes 6 portions (£1 each) versus £3-4 per ready meal. Freeze portions for quick weeknight dinners.
Use yellow sticker reductions
Supermarkets reduce items by 25-75% near closing time. Freeze meat and bread on the day of purchase. Apps like Too Good To Go offer surprise bags from £3.
Compare unit prices
The bigger pack isn't always cheaper per gram. Check the small print on shelf labels, or use our Unit Price Calculator to compare.
Quick Wins to Cut Your Grocery Bill
Switch to own-brand basics
Supermarket own-brand staples (rice, pasta, tinned tomatoes, flour) are 30-60% cheaper than branded equivalents. For most staples, the ingredients are identical — the packaging is the only difference.
Buy frozen vegetables
Frozen veg are picked and frozen within hours of harvest — often more nutritious than "fresh" veg that's been in transit for days. They're 40-50% cheaper and nothing goes to waste.
Meal plan before you shop
WRAP (the waste charity) estimates the average UK household throws away £60 of food per month. Planning 5 dinners and writing a shopping list cuts impulse buys and food waste in half.
Check the unit price
The "bigger pack is cheaper" rule isn't always true. Supermarkets are required to show price per kg or per litre on shelf labels. Compare these, not the headline price — it's the only honest comparison.
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How to use this tool
Enter number of adults and children
Set your total monthly food budget (or leave blank for recommendations)
Add eating-out frequency and average cost
Common uses
- Planning a monthly food budget based on household size
- Tracking how much eating out adds to your food spending
- Working out cost per meal to guide shopping decisions
- Comparing your grocery spend to UK averages
- Setting a realistic weekly food shopping target
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