Medium Diet Coke Price at McDonald's (2026) — New Hampshire

A Medium Diet Coke costs $1.99 at McDonald's in New Hampshire, United States (updated August 2026).

A Medium Diet Coke® at McDonald's costs $1.99 in the United States as of August 2026. That's about 13% below the average McDonald's Cold Drink item — the 1st-most-expensive of 3 we track. It's available at around 472 McDonald's locations across the United States. Prices are sourced from delivery platforms and refreshed regularly. Check the full McDonald's menu or compare Cold Drink prices on MenuPriceToday.

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