Are cereal boxes getting smaller? Cereal shrinkflation, brand by brand

By ShrinkRadar · Updated 2026-11-05 · Every figure comes from a sourced case

Yes. Cereal boxes and muesli bags keep shrinking. We have 67 documented cases of breakfast cereals, muesli, granola and oats that got smaller, in the US, Germany, Australia, the UK, France, Japan, the Netherlands, Canada, Austria, Spain, Hong Kong and Israel, from 2012 to 2026, 14 of them in 2026. The median pack lost 12.8% of its contents, a 14.7% hidden price rise per gram at the same pack price. The latest: Kellogg's Coco Pops (Australia), 650 g → 535 g (2026, theaustralian.com.au). The biggest: Crownfield Cornflakes, 850 g → 500 g (−41.2%). Where the source also recorded the price (35 cases), 35 of 35 cost more per gram afterwards. In the US, 6 “family size” boxes lost weight, including Cocoa Puffs Family Size (19.3 oz → 18.1 oz), Family-size Frosted Flakes (24 oz → 21.7 oz), Family-size Raisin Bran (24 oz → 22.1 oz).

Cereal Facts

Are cereal boxes getting smaller?Yes

Documented cuts67

Cereal boxes40

Muesli, granola and oats27

Brands41

Countries12

Years2012–2026

Median cut−12.8%

Hidden rise per gram at the same price (median)+14.7%

Biggest cut−41.2%

Pricier per gram (of 35 priced)35

Check any pack with the unit price calculator.

Latest documented cuts

Breakfast Cereals · 2026
Stop & Shop instant oatmeal packets
10 → 8 packets−20.0%
United States · Source: mouseprint.org
Breakfast Cereals · 2026
Dorset Cereals Simply Delicious → Delicious Fruit & Nut Muesli
650 → 500 g−23.1%
United Kingdom · Source: thegrocer.co.uk
Breakfast Cereals · 2026
Dorset Cereals Simply Fruity → Fantastically Fruity Muesli
630 → 500 g−20.6%
United Kingdom · Source: thegrocer.co.uk
Breakfast Cereals · 2026
Dorset Cereals Simply Nutty → Gloriously Nutty Muesli
560 → 500 g−10.7%
United Kingdom · Source: thegrocer.co.uk
Breakfast Cereals · 2026
Kellogg's Coco Pops (Australia)
650 → 535 g−17.7%
Australia · Source: theaustralian.com.au
Breakfast Cereals · 2026
Kellogg's Special K (Australia)
535 → 500 g−6.5%
Australia · Source: theaustralian.com.au

Biggest cuts

Breakfast Cereals · 2023
Sainsbury's Scottish Oats
1000 → 500 g−50.0%
United Kingdom · Source: which.co.uk
Breakfast Cereals · 2022
Crownfield Cornflakes
850 → 500 g−41.2%
Germany · Source: vzhh.de
Breakfast Cereals · 2025
Kölln das Original Schoko Hafer Müsli Vorratspackung
1700 → 1050 g−38.2%
Germany · Source: vzhh.de

Brand tracker: every documented cut

Brands with two or more cases, newest first. Each line is a separate report, often a different size or variety, so the numbers do not always chain.

Brand	Cases	Documented cuts	Biggest
Kölln	6	Kölln Früchte Hafer Müsli Vorratspackung: 1700 → 1200 g (2025) Kölln Knusper Schoko & Keks Hafer-Müsli: 500 → 440 g (2025) Kölln Knusper Schoko & Keks Kakao Hafer-Müsli: 500 → 400 g (2025) Kölln das Original Schoko Hafer Müsli: 500 → 450 g (2025) Kölln das Original Schoko Hafer Müsli Vorratspackung: 1700 → 1050 g (2025) Kölln Das Original Schoko Hafer-Müsli: 600 → 500 g (2024)	−38.2%
Kellogg's	6	Kellogg's Coco Pops (Australia): 650 → 535 g (2026) Kellogg's Corn Pops: 18.1 → 16.4 oz (2026) Kellogg's Special K (Australia): 535 → 500 g (2026) Kellogg's Corn Flakes (Hong Kong): 250 → 175 g (2021–2024) Kellogg's Special K Red Berries Cereal: 16.9 → 15.6 oz (2024) Kellogg's Corn Pops: 14.3 → 13.1 oz (2023)	−30.0%
Dr. Oetker	4	Dr. Oetker Vitalis Knusper Müsli Schoko + Banane: 600 → 450 g (2025) Dr. Oetker Vitalis Schoko Müsli Klassisch Großpackung: 1500 → 1125 g (2025) Dr. Oetker Vitalis weniger süß Müsli Knusper Schoko: 500 → 400 g (2025) Dr. Oetker muesli (Austria): 600 → 450 g (2025)	−25.0%
Calbee	3	Calbee Frugra Low-Carb granola (Japan): 350 → 300 g (2026) Calbee Frugra granola 380 g bag (Japan): 380 → 330 g (2026) Calbee Mygra almond & chocolate crunch granola (Japan): 400 → 350 g (2026)	−14.3%
Dorset Cereals	3	Dorset Cereals Simply Delicious → Delicious Fruit & Nut Muesli: 650 → 500 g (2026) Dorset Cereals Simply Fruity → Fantastically Fruity Muesli: 630 → 500 g (2026) Dorset Cereals Simply Nutty → Gloriously Nutty Muesli: 560 → 500 g (2026)	−23.1%
Post	3	Post Premier Protein cereal: 11 → 9 oz (2025) Post Cocoa Pebbles cereal box: 20.05 → 19.5 oz (2022) Post Honey Bunches of Oats: 14.5 → 12 oz (2022)	−18.2%
Cheerios	2	Family-size apple cinnamon Cheerios: 20.1 → 19 oz (2024) Family-size cinnamon oat crunch Cheerios: 26 → 24 oz (2024)	−7.7%
Chocapic	2	Chocapic cereal, 430 g pack (France): 430 → 375 g (2024) Chocapic cereal, 750 g pack (France): 750 → 645 g (2024)	−14.0%
Coles	2	Coles Mighty Grain cereal: 560 → 495 g (2024) Coles corn flakes: 475 → 440 g (2024)	−11.6%
Frosted Flakes	2	Family-size Frosted Flakes: 24 → 21.7 oz (2024) Kellogg's Frosted Flakes (Canada): 445 → 425 g (2015)	−9.6%
Nestlé	2	Nestlé L'Atelier hazelnoot & rozijn: 170 → 150 g (2024) Nestlé Fitness cereal (Spain): 450 → 375 g (2022–2023)	−16.7%
Quaker	2	Quaker Instant Oatmeal raisin, date & walnut: 10 → 8 packets (2022) Quaker Life Cereal: 24.8 → 22.3 oz (2022)	−20.0%
Raisin Bran	2	Family-size Raisin Bran: 24 → 22.1 oz (2024) Kellogg's Raisin Bran (2012): 15 → 13.7 oz (2012)	−8.7%

Cereal boxes

Newest first. “Hidden rise” is the extra you pay per gram or ounce if the box price stays the same.

Product	Size	Cut	Hidden rise	Price · real change per unit
Kellogg's Coco Pops (Australia) Kellogg's · Australia · 2026	650 g → 535 g	−17.7%	+21.5%	A$7.50 → A$9.00 +45.8%
Kellogg's Special K (Australia) Kellogg's · Australia · 2026	535 g → 500 g	−6.5%	+7.0%	A$7.65 → A$9.00 +25.9%
Uncle Tobys Cheerios (Australia) Uncle Tobys · Australia · 2026	580 g → 560 g	−3.4%	+3.6%	A$6.30 → A$7.50 +23.3%
Edeka Herzstücke Hearts & Hoops Edeka · Germany · 2026	500 g → 375 g	−25.0%	+33.3%	2,99 € → 3,49 € +55.6%
Kellogg's Corn Pops Kellogg's · United States · 2026	18.1 oz → 16.4 oz	−9.4%	+10.4%	—
Post Premier Protein cereal Post · United States · 2025	11 oz → 9 oz	−18.2%	+22.2%	—
Kellogg's Corn Flakes (Hong Kong) Kellogg's · Hong Kong · 2021–2024	250 g → 175 g	−30.0%	+42.9%	—
Kellogg's Special K Red Berries Cereal Kellogg's · United States · 2024	16.9 oz → 15.6 oz	−7.7%	+8.3%	—

Show all 40 cases (32 more)

Product	Size	Cut	Hidden rise	Price · real change per unit
Kashi Go Cereal Kashi · United States · 2024	13 oz → 9.7 oz	−25.4%	+34.0%	—
Chocapic cereal, 750 g pack (France) Chocapic · France · 2024	750 g → 645 g	−14.0%	+16.3%	—
Chocapic cereal, 430 g pack (France) Chocapic · France · 2024	430 g → 375 g	−12.8%	+14.7%	—
Lion caramel and chocolate cereal (France) Lion · France · 2024	750 g → 675 g	−10.0%	+11.1%	—
Kellogg's Froot Loops Froot Loops · United States · 2024	10.1 oz → 8.9 oz	−11.9%	+13.5%	—
Nestlé L'Atelier hazelnoot & rozijn Nestlé · Netherlands · 2024	170 g → 150 g	−11.8%	+13.3%	€2,99 → €2,99 +13.3%
Coles Mighty Grain cereal Coles · Australia · 2024	560 g → 495 g	−11.6%	+13.1%	—
Woolworths Max Charge cereal Woolworths · Australia · 2024	560 g → 495 g	−11.6%	+13.1%	—
Family-size Frosted Flakes Frosted Flakes · United States · 2024	24 oz → 21.7 oz	−9.6%	+10.6%	$3.64 → $4.48 +36.1%
Bauck Mühle Choco Balls Bauck Mühle · Germany · 2024	300 g → 275 g	−8.3%	+9.1%	4,29 € → 4,49 € +14.2%
Family-size Raisin Bran Raisin Bran · United States · 2024	24 oz → 22.1 oz	−7.9%	+8.6%	$3.64 → $4.98 +48.6%
Family-size cinnamon oat crunch Cheerios Cheerios · United States · 2024	26 oz → 24 oz	−7.7%	+8.3%	$3.64 → $4.93 +46.7%
Coles corn flakes Coles · Australia · 2024	475 g → 440 g	−7.4%	+8.0%	—
Community Co cereal Community Co · Australia · 2024	480 g → 450 g	−6.2%	+6.7%	—
Family-size apple cinnamon Cheerios Cheerios · United States · 2024	20.1 oz → 19 oz	−5.5%	+5.8%	$3.64 → $4.93 +43.3%
Family-size Reese's Puffs Reese's · United States · 2024	20.7 oz → 19.7 oz	−4.8%	+5.1%	$3.64 → $4.93 +42.3%
Honey Nut Chex Chex · United States · 2024	20.3 oz → 19.6 oz	−3.4%	+3.6%	$3.43 → $4.93 +48.9%
Honeycomb family-size cereal (Canada) Honeycomb · Canada · 2023	595 g → 525 g	−11.8%	+13.3%	—
Kellogg's Corn Pops Kellogg's · United States · 2023	14.3 oz → 13.1 oz	−8.4%	+9.2%	—
Nestlé Fitness cereal (Spain) Nestlé · Spain · 2022–2023	450 g → 375 g	−16.7%	+20.0%	€2.90 → €3.22 +33.2%
Cocoa Puffs Family Size Cocoa Puffs · United States · 2021–2023	19.3 oz → 18.1 oz	−6.2%	+6.6%	—
Cap'n Crunch Cap'n Crunch · United States · 2022	12.5 oz → 11.4 oz	−8.8%	+9.6%	—
Honey Bunches cornflakes box (Israel) Honey Bunches · Israel · 2022	411 g → 340 g	−17.3%	+20.9%	—
Quaker Life Cereal Quaker · United States · 2022	24.8 oz → 22.3 oz	−10.1%	+11.2%	—
Post Honey Bunches of Oats Post · United States · 2022	14.5 oz → 12 oz	−17.2%	+20.8%	—
Post Cocoa Pebbles cereal box Post · United States · 2022	20.05 oz → 19.5 oz	−2.7%	+2.8%	—
Crownfield Cornflakes Crownfield · Germany · 2022	850 g → 500 g	−41.2%	+70.0%	1,99 € → 1,39 € +18.7%
Clusters Almonds Clusters · Germany · 2021	375 g → 325 g	−13.3%	+15.4%	2,99 € → 2,99 € +15.4%
Nesquik Knusper Frühstück Nesquik · Germany · 2021	375 g → 330 g	−12.0%	+13.6%	3,29 € → 3,29 € +13.6%
Cini Minis Crazy Crush Cini Minis · Germany · 2020	410 g → 360 g	−12.2%	+13.9%	2,99 € → 2,99 € +13.9%
Kellogg's Frosted Flakes (Canada) Frosted Flakes · Canada · 2015	445 g → 425 g	−4.5%	+4.7%	—
Kellogg's Raisin Bran (2012) Raisin Bran · United States · 2012	15 oz → 13.7 oz	−8.7%	+9.5%	—

Muesli, granola and oats

Including instant oatmeal packets.

Product	Size	Cut	Hidden rise	Price · real change per unit
Stop & Shop instant oatmeal packets Stop & Shop · United States · 2026	10 packets → 8 packets	−20.0%	+25.0%	—
Dorset Cereals Simply Delicious → Delicious Fruit & Nut Muesli Dorset Cereals · United Kingdom · 2026	650 g → 500 g	−23.1%	+30.0%	£3.60 → £3.99 +44.1%
Dorset Cereals Simply Fruity → Fantastically Fruity Muesli Dorset Cereals · United Kingdom · 2026	630 g → 500 g	−20.6%	+26.0%	—
Dorset Cereals Simply Nutty → Gloriously Nutty Muesli Dorset Cereals · United Kingdom · 2026	560 g → 500 g	−10.7%	+12.0%	£3.80 → £3.96 +16.7%
Holie's granola mixed berries Holie's · Netherlands · 2026	350 g → 320 g	−8.6%	+9.4%	€3.99 → €3.99 +9.4%
Zonnatura Teff meergranenontbijt Zonnatura · Netherlands · 2026	300 g → 250 g	−16.7%	+20.0%	€3,79 → €3,59 +13.7%
Calbee Frugra Low-Carb granola (Japan) Calbee · Japan · 2026	350 g → 300 g	−14.3%	+16.7%	—
Calbee Frugra granola 380 g bag (Japan) Calbee · Japan · 2026	380 g → 330 g	−13.2%	+15.2%	—

Show all 27 cases (19 more)

Product	Size	Cut	Hidden rise	Price · real change per unit
Calbee Mygra almond & chocolate crunch granola (Japan) Calbee · Japan · 2026	400 g → 350 g	−12.5%	+14.3%	—
Kölln das Original Schoko Hafer Müsli Vorratspackung Kölln · Germany · 2025	1700 g → 1050 g	−38.2%	+61.9%	9,99 € → 7,99 € +29.5%
Vitalis Schoko Müsli Feinherb Vitalis · Germany · 2025	600 g → 400 g	−33.3%	+50.0%	3,99 € → 3,99 € +50.0%
Kölln Früchte Hafer Müsli Vorratspackung Kölln · Germany · 2025	1700 g → 1200 g	−29.4%	+41.7%	9,99 € → 7,99 € +13.3%
Dr. Oetker Vitalis Knusper Müsli Schoko + Banane Dr. Oetker · Germany · 2025	600 g → 450 g	−25.0%	+33.3%	3,99 € → 3,99 € +33.3%
Dr. Oetker Vitalis Schoko Müsli Klassisch Großpackung Dr. Oetker · Germany · 2025	1500 g → 1125 g	−25.0%	+33.3%	8,79 € → 8,79 € +33.3%
Dr. Oetker muesli (Austria) Dr. Oetker · Austria · 2025	600 g → 450 g	−25.0%	+33.3%	—
Dr. Oetker Vitalis weniger süß Müsli Knusper Schoko Dr. Oetker · Germany · 2025	500 g → 400 g	−20.0%	+25.0%	3,99 € → 3,99 € +25.0%
Kölln Knusper Schoko & Keks Kakao Hafer-Müsli Kölln · Germany · 2025	500 g → 400 g	−20.0%	+25.0%	3,79 € → 3,79 € +25.0%
mymuesli Low Sugar Choco Crunch mymuesli · Germany · 2025	575 g → 500 g	−13.0%	+15.0%	6,99 € → 8,49 € +39.7%
Kölln Knusper Schoko & Keks Hafer-Müsli Kölln · Germany · 2025	500 g → 440 g	−12.0%	+13.6%	3,79 € → 3,79 € +13.6%
Kölln das Original Schoko Hafer Müsli Kölln · Germany · 2025	500 g → 450 g	−10.0%	+11.1%	3,79 € → 3,79 € +11.1%
Signature (Albertsons) instant oatmeal packets Signature · United States · 2024	10 packets → 8 packets	−20.0%	+25.0%	—
Kölln Das Original Schoko Hafer-Müsli Kölln · Germany · 2024	600 g → 500 g	−16.7%	+20.0%	3,79 € → 3,79 € +20.0%
Sainsbury's Scottish Oats Sainsbury's · United Kingdom · 2023	1000 g → 500 g	−50.0%	+100.0%	—
Quaker Instant Oatmeal raisin, date & walnut Quaker · United States · 2022	10 packets → 8 packets	−20.0%	+25.0%	—
Rewe Bio 5-Korn-Müsli Rewe · Germany · 2022	1000 g → 750 g	−25.0%	+33.3%	2,49 € → 2,19 € +17.3%
Hofgut Basismüsli zum Selbermischen Hofgut · Germany · 2020	750 g → 500 g	−33.3%	+50.0%	2,79 € → 1,99 € +7.0%
Seitenbacher Frucht Müsli Seitenbacher · Germany · 2020	1000 g → 750 g	−25.0%	+33.3%	3,79 € → 4,99 € +75.5%

By country

Country	Cases	Median cut
United States	21	−8.8%
Germany	20	−22.5%
Australia	7	−7.4%
United Kingdom	4	−21.9%
France	3	−12.8%
Japan	3	−13.2%
Netherlands	3	−11.8%
Canada	2	−8.1%
Austria	1	−25.0%
Spain	1	−16.7%
Hong Kong	1	−30.0%
Israel	1	−17.3%

By year

Documented cases by the year the source dates the change. This counts what was reported, not every pack that shrank, so a busy year can simply mean more coverage.

12012

02013

02014

12015

02016

02017

02018

02019

32020

22021

82022

52023

212024

122025

142026

Hatched bar: 2026 so far (partial year).

Year	Cases	Median cut	Biggest cut that year
2026 (so far)	14	−13.7%	Edeka Herzstücke Hearts & Hoops 500 → 375 g (−25.0%)
2025	12	−22.5%	Kölln das Original Schoko Hafer Müsli Vorratspackung 1700 → 1050 g (−38.2%)
2024	21	−10.0%	Kellogg's Corn Flakes (Hong Kong) 250 → 175 g (−30.0%)
2023	5	−11.8%	Sainsbury's Scottish Oats 1000 → 500 g (−50.0%)
2022	8	−17.3%	Crownfield Cornflakes 850 → 500 g (−41.2%)
2021	2	−12.7%	Clusters Almonds 375 → 325 g (−13.3%)
2020	3	−25.0%	Hofgut Basismüsli zum Selbermischen 750 → 500 g (−33.3%)
2015	1	−4.5%	Kellogg's Frosted Flakes (Canada) 445 → 425 g (−4.5%)
2012	1	−8.7%	Kellogg's Raisin Bran (2012) 15 → 13.7 oz (−8.7%)

How to compare cereal boxes

Price per 100 g or per ounce. It is the only fair comparison between box sizes and brands.
“Family size” is not a size. Family-size Frosted Flakes went from 24 to 21.7 oz (US, 2024).
Count the packets. Instant oatmeal boxes went from 10 to 8 packets (Quaker 2022, Albertsons Signature 2024, Stop & Shop 2026).
Bulk bags shrink too. Kölln's large muesli bags went from 1.7 kg to 1.2 kg and 1.05 kg (Germany, 2025).
Look it up: search a brand, scan it with the barcode lookup, or browse the cereals we track.

More: all breakfast cereal cases and tracked boxes · coffee shrinkflation · chips shrinkflation · butter, cheese & yogurt · US tracker · Germany list · Australia tracker · ShrinkRadar Index.

ShrinkRadar Index for breakfast cereal: +25.0% per unit vs +2.6% official inflation (median of the same 35 priced cases since 2018)

Brand records

FAQ

Are cereal boxes getting smaller?

Yes. Cereal boxes and muesli bags keep shrinking. ShrinkRadar has 67 documented cases of breakfast cereals, muesli, granola and oats sold in smaller packs or with fewer items, in the US, Germany, Australia, the UK, France, Japan, the Netherlands, Canada, Austria, Spain, Hong Kong and Israel, from 2012 to 2026 (14 of them in 2026). The median cut is 12.8%, which is a 14.7% higher price per gram if the pack price stayed the same. The most recent: Kellogg's Coco Pops (Australia) 650 g → 535 g (2026); Kellogg's Special K (Australia) 535 g → 500 g (2026); Uncle Tobys Cheerios (Australia) 580 g → 560 g (2026); Edeka Herzstücke Hearts & Hoops 500 g → 375 g (2026).

Which cereal shrank the most?

Crownfield Cornflakes: 850 g → 500 g (−41.2%, 2022, source: vzhh.de). Others with big cuts: Kellogg's Corn Flakes (Hong Kong) 250 g → 175 g; Kashi Go Cereal 13 oz → 9.7 oz; Edeka Herzstücke Hearts & Hoops 500 g → 375 g.

Has Kölln shrunk its cereal?

Yes. 6 documented cuts, newest first: Kölln Früchte Hafer Müsli Vorratspackung 1700 g → 1200 g (2025); Kölln Knusper Schoko & Keks Hafer-Müsli 500 g → 440 g (2025); Kölln Knusper Schoko & Keks Kakao Hafer-Müsli 500 g → 400 g (2025); Kölln das Original Schoko Hafer Müsli 500 g → 450 g (2025); Kölln das Original Schoko Hafer Müsli Vorratspackung 1700 g → 1050 g (2025); Kölln Das Original Schoko Hafer-Müsli 600 g → 500 g (2024).

Has Kellogg's shrunk its cereal?

Yes. 6 documented cuts, newest first: Kellogg's Coco Pops (Australia) 650 g → 535 g (2026); Kellogg's Corn Pops 18.1 oz → 16.4 oz (2026); Kellogg's Special K (Australia) 535 g → 500 g (2026); Kellogg's Corn Flakes (Hong Kong) 250 g → 175 g (2021–2024); Kellogg's Special K Red Berries Cereal 16.9 oz → 15.6 oz (2024); Kellogg's Corn Pops 14.3 oz → 13.1 oz (2023).

Has Dr. Oetker shrunk its cereal?

Yes. 4 documented cuts, newest first: Dr. Oetker Vitalis Knusper Müsli Schoko + Banane 600 g → 450 g (2025); Dr. Oetker Vitalis Schoko Müsli Klassisch Großpackung 1500 g → 1125 g (2025); Dr. Oetker Vitalis weniger süß Müsli Knusper Schoko 500 g → 400 g (2025); Dr. Oetker muesli (Austria) 600 g → 450 g (2025).

Did the price per gram go up?

Where the source recorded the price before and after (35 cases), 35 cost more per gram afterwards.

How do I compare cereal prices fairly?

Use the price per 100 g or per ounce. “Family size” and “value” boxes are names, not standard sizes, and several of them lost weight. The unit price calculator compares boxes by weight.

Where does this data come from?

From mouseprint.org, thegrocer.co.uk, theaustralian.com.au, prijsprofeet.nl, vzhh.de, consumentenbond.nl, calbee.co.jp, vorarlberg.orf.at. Each case page quotes or links its source, and we list a cut only when the source gives both the old and the new size or count. We do not estimate.