Fries Watch
A small at one brand can outweigh a large at another, so we price fries the fair way: per 100 grams, using each brand's own serving weights.
Pickup prices at 1,223 restaurants in Spain, checked . Prices are in euros.
Key findings
- Popeyes has the cheapest fries in Spain by weight: its small cajun (125 g, typically €1.49) works out at €1.19 per 100 g.
- Burger King has the dearest: €1.37 per 100 g even at its best-value size (extra large supreme, 289 g).
Price per 100 g, cheapest first
Each brand's best-value size: the one with the lowest typical price per 100 g.
| Rank | Brand | Best-value size | Weight | Typical price | Per 100 g |
|---|---|---|---|---|---|
| 1 | Popeyes | Kids Cajun Fries | 125 g | €1.49 | €1.19 |
| 2 | Burger King | Supreme Fries Extra Large | 289 g | €3.95 | €1.37 |
Every size
| Brand | Size | Weight | Typical | Range | Per 100 g | Restaurants |
|---|---|---|---|---|---|---|
| Burger King | Small Fries | — | €1.00 | €1.00 to €1.30 | — | 987 |
| Burger King | Medium Classic Fries | — | €2.95 | €2.40 to €4.45 | — | 988 |
| Burger King | Medium Supreme Fries | — | €2.95 | €2.95 to €4.45 | — | 988 |
| Burger King | Large Classic Fries | — | €3.50 | €2.60 to €4.85 | — | 988 |
| Burger King | Classic Fries King Extra Large | — | €3.95 | €2.80 to €5.45 | — | 988 |
| Burger King | Supreme Fries Extra Large | 289 g | €3.95 | €3.90 to €5.45 | €1.37 | 988 |
| Popeyes | Kids Cajun Fries | 125 g | €1.49 | €1.49 to €2.49 | €1.19 | 191 |
| Popeyes | Medium Cajun Fries | 140 g | €2.79 | €2.79 to €2.99 | €1.99 | 190 |
| Popeyes | Large Cajun Fries | — | €2.99 | €2.99 to €3.49 | — | 190 |
| Five Guys | Patatas Estilo Five Guys Pequeñas | — | €4.25 | €4.00 to €4.25 | — | 44 |
| Five Guys | Patatas Cajún Pequeñas | — | €4.25 | €4.00 to €4.25 | — | 44 |
| Five Guys | Patatas Estilo Five Guys | — | €5.50 | €5.00 to €5.50 | — | 44 |
| Five Guys | Patatas Cajún | — | €5.50 | €5.00 to €5.50 | — | 44 |
| Five Guys | Patatas Estilo Five Guys Grandes | — | €6.50 | €6.00 to €6.50 | — | 44 |
| Five Guys | Patatas Cajún Grandes | — | €6.50 | €6.00 to €6.50 | — | 44 |
Cheapest fries by weight in each region
| Region | Brand | Size | Per 100 g |
|---|---|---|---|
| Andalusia | Popeyes | Small Cajun | €1.19 |
| Aragon | Popeyes | Small Cajun | €1.19 |
| Asturias | Popeyes | Small Cajun | €1.19 |
| Castile and León | Popeyes | Small Cajun | €1.19 |
| Castilla-La Mancha | Popeyes | Small Cajun | €1.19 |
| Canary Islands | Popeyes | Small Cajun | €1.19 |
| Catalonia | Popeyes | Small Cajun | €1.19 |
| Galicia | Popeyes | Small Cajun | €1.19 |
| Murcia | Popeyes | Small Cajun | €1.19 |
| Madrid | Popeyes | Small Cajun | €1.19 |
| Navarre | Popeyes | Small Cajun | €1.19 |
| Basque Country | Popeyes | Small Cajun | €1.19 |
| Valencian Community | Popeyes | Small Cajun | €1.19 |
| Cantabria | Burger King | Extra Large Supreme | €1.37 |
| Extremadura | Burger King | Extra Large Supreme | €1.37 |
| La Rioja | Burger King | Extra Large Supreme | €1.37 |
| Balearic Islands | Burger King | Extra Large Supreme | €1.49 |
The cheapest fries by weight in Spain
| Brand | Restaurant | Where | Size | Price | Per 100 g |
|---|---|---|---|---|---|
| Popeyes | Calle Mayor 38, 28013, Madrid | Madrid, MD | Small Cajun | €1.49 | €1.19 |
| Popeyes | C.c La Gavia, Calle Adolfo Bioy Casares 2, 28051, Madrid | Madrid, MD | Small Cajun | €1.49 | €1.19 |
| Popeyes | C.c Plenilunio, Calle de Aracne 3, 28022, Madrid | Madrid, MD | Small Cajun | €1.49 | €1.19 |
| Popeyes | Avenida Albufera 20, 28038, Madrid | Madrid, MD | Small Cajun | €1.49 | €1.19 |
| Popeyes | Calle Humanes 11, 28805, Alcalá de Henares | Alcalá De Henares, MD | Small Cajun | €1.49 | €1.19 |
| Burger King | AU Ap7-km 144 (Dirección Girona) | Barcelona, CT | Extra Large Supreme | €3.90 | €1.35 |
| Burger King | AU Autopista Ap-7 Km. 85 KM 85 | Macanet De La Selva, CT | Extra Large Supreme | €3.90 | €1.35 |
| Burger King | AV Avda. Partenón Ifema S/n | Madrid, MD | Extra Large Supreme | €3.90 | €1.35 |
| Burger King | AU AU Ap7-km 144 (Dirección Barcelona) KM 144 | Valles De Sur, CT | Extra Large Supreme | €3.90 | €1.35 |
| Burger King | PO Aerop. Barajas Terminal 4 Sat T4sat | Madrid, MD | Extra Large Supreme | €3.90 | €1.35 |
Weights are the serving sizes each brand publishes in its nutrition information: Burger King (czqk28jt.apicdn.sanity.io), Five Guys (www.fiveguys.es), Popeyes (czqk28jt.apicdn.sanity.io). Prices are each restaurant's pickup price; "typical" is the median restaurant. Five Guys does not publish serving weights, so it is listed by price only.
Questions people ask
- Who has the cheapest fries?
- By weight, Popeyes: its small cajun fries (125 g) are typically €1.49, or €1.19 per 100 g (Drive Thru Index, 2026-10-03).
- Why compare fries by weight?
- Size names mean different things at different brands: one brand's small can outweigh another's large. Price per 100 g, from each brand's own published serving weights, compares like with like.