Tool
Glasses per bottle
Depends entirely on the pour. This shows the answer for every standard pour size and bottle format.
Result
4 full glasses
Total volume: 750 ml (0.75 litres)Wine left over: 50 ml
How this was worked out
Formula
servings = (bottle volume × number of bottles) ÷ pour size
Where
- V = 750 ml — Bottle volume. The stated capacity of one bottle.
- n = 1 — Number of bottles. How many bottles of this size you have.
- p = 175 ml — Pour size. How much wine goes into each glass.
Steps
- Total volume: 750 ml × 1 = 750 ml = 750 ml
- Divide by pour size: 750 ml ÷ 175 ml = 4.29 = 4.29 servings
- Round down to whole glasses: ⌊4.29⌋ = 4 = 4 servings — Rounded down because a partial glass is not a serving.
What this assumes
- Pours are exact. In practice free-poured glasses vary by 10–20%.
- No allowance is made for wine left in the bottle or lost to sediment.
Where it stops being reliable
- A 175 ml pour is the standard UK measure, but "a glass of wine" means different things in different places and in different homes.
Related tools
How much wine do I need for my party?
Event wine planner
A provisioning estimate for a host: how many bottles to buy for a given number of guests over a given number of hours.
How big is a magnum? What is a Jeroboam?
Bottle size converter
Every format from Piccolo to Nebuchadnezzar, converted between each other — including the two different sizes both called Jeroboam.