CalcBritain

Food Waste Cost Calculator

UK households bin roughly 18% of the edible food they buy, on average. Applied to your own weekly shop, that adds up to far more than most people realise. Enter your weekly shop and your best estimate of how much goes to waste to see the real cost — and what halving it could be worth.

Estimate only. This calculator gives estimates for information only, not financial advice. The invested-instead projection is illustrative — investment growth isn't guaranteed and actual returns will vary.

Binned every year
£889
£17.10/week

That's roughly 4.3 meal deals' worth of food binned every week.

Halving your waste would save
£445

Just cutting what you bin in half — not eliminating it — is usually the realistic target.

What if you invested the saving instead?

Redirecting £37/month — the saving from halving your food waste — into an investment growing at your chosen rate could add up to:

£5,753

Grown from £4,446 paid in, plus £1,307 in growth.

Illustrative only, not investment advice — growth isn't guaranteed and this doesn't account for charges or tax.

Ways to cut food waste
  • Plan meals against what's already in the fridge and cupboard before you shop, not just against what looks good on the shelf.
  • Freeze bread, meat and leftovers before the date on the pack, rather than after — freezing pauses the clock, it doesn't reset it.
  • "Best before" is about quality, not safety — food is usually still fine to eat past that date. "Use by" is the one that matters for safety.
  • Wonky veg boxes and reduced-to-clear sections cut both the price and the waste of fruit and veg that would otherwise be binned.

Why food waste costs more than it looks like

Food waste rarely feels like a single big expense — it's a few browning bananas here, a forgotten yoghurt there. But applied consistently across a year, at the UK's average waste rate of around 18% of edible food bought, the total for a typical family shop lands close to £880 a year according to WRAP. Halving that waste, rather than eliminating it entirely, is usually the realistic starting point — and redirecting even that smaller saving into an investment or savings account compounds it further over time.