Pour Over Coffee Calculator: Ratio & Brew Guide

☕ Pour Over Coffee Calculator

Calculate exact coffee weight, water volume, brew ratio, bloom water, and brew time

Quick Presets
🧮 Calculator
Water Needed
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ml
Bloom Water
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ml (pour first)
Est. Brew Time
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minutes total
Coffee : Water
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brew ratio
📊 Common Pour Over Ratios at a Glance
1:14
Bold / Rich
1:15
Strong
1:16
Balanced
1:17
Light / Bright
📈 Brew Ratio Reference Table
StrengthRatioCoffee (g)Water (ml)Notes
Very Light1:2015g300mlTea-like, very delicate
Light1:1815g270mlGood for light roasts
Medium-Light1:1715g255mlBright, clean cup
Balanced1:1617g272mlSCA golden standard
Strong1:1520g300mlBold, full body
Bold1:1422g308mlVery concentrated
🦷 Grind Size Guide for Pour Over
Grind SizeTextureBest ForBrew Time
FineTable saltEspresso-style pour over1–2 min
Medium-FineSandV60, Kalita Wave2.5–3.5 min
MediumCoarse sandChemex, drip3–4 min
Medium-CoarseRough sandChemex, cold brew4–5 min
CoarseSea saltFrench press, cold brew4+ min
🌡 Water Temperature Guide
Temp (°F)Temp (°C)Best ForEffect
195°F91°CDark roastsLess bitter, smoother
198°F92°CMedium-darkBalanced extraction
200°F93°CMedium roastsSweet spot for most
202°F94°CMedium-lightHighlights brightness
205°F96°CLight roastsFull extraction, floral
Pour Over Timing Guide
StageTimeWater AmountNotes
Bloom Pour0:00 – 0:452x coffee weightSaturate all grounds evenly
First Pour0:45 – 1:15~40% of total waterSlow, steady circular pour
Second Pour1:15 – 2:00~30% of total waterKeep water level steady
Final Pour2:00 – 2:30Remaining waterAvoid disturbing grounds
Drawdown2:30 – 3:30Total target: 3–4 minutes
☕ Tip: The SCA (Specialty Coffee Association) recommends a 1:16 to 1:18 ratio for optimal extraction. Always start your brew with a bloom: pour twice the coffee weight in hot water, var it sit for 30–45 seconds, then continue pouring. This releases CO2 trapped in fresh coffee grounds and ensures even extraction throughout your entire brew.
🌡 Tip: Water temperature matters more than most brewers realize. For dark roasts, use 195–198°F to avoid harsh bitterness. For light and medium roasts, go hotter at 200–205°F to fully extract the complex flavors and bright acidity. Always use filtered or bottled water — mineral content in tap water significantly affects taste.

Pour over coffee is a general name for any handmade brew method where you pour water over coffee grounds in a filter The water goes through the grounds before falling in the server, entirely without machine help. It seems simple; after all, you only pour water on grounds, right? There is more to it than that.

The ideal ratio coffee-to-water is 1:16, so one gram coffee for sixteen grams water. For a 20-gram dose coffee it works to 320 grams water. Without a scale you can use around two tablespoons coffee for a six-ounce cup as a rough guide.

How to Make Pour Over Coffee

Starting with good coffee matters. Buying grocery store coffee, especially pre-ground, is a waste of time. A good burr grinder is worth the investment.

Hand-operated models do not cost a lot and work well. Blade grinders do not work. The ground size can make or break the result, because it changes the flow of water through the filter in the cup.

Gooseneck kettles help control the pour, and a kettle with temperature control is great, because it keeps the wanted heat until the moment of use. A scale is really practical. The Jennings CJ4000 is a good model for around 25 dollars, very precise and durable.

Many specialty coffee shops use them.

To prepare, lay the carafe on digital scales and lay a filter, whether paper or metal. Pour the coffee, then zero the scale. Pour 50 to 60 grams water on the grounds and let them bloom during 45 seconds.

Blooming helps gases exit and improve the whole aroma. Later pour the rest of the water. For a 20-gram dose with 300 grams water, four equal pours of 60 grams, together with the bloom, reach the wanted weight.

A pause of 10 to 20 seconds between pours works well. The hole process should not last more than five minutes, otherwise bad tastes appear.

Different pour modes alter the coffee character. Central pour little moves the grounds, which is good for beans that easily become astringent. In a pour over, you have two extracts: by motion or by diffusion.

Flat bottom drippers give reliable extraction and great results. Many techniques and recipes exist, and most give good results. It depends on grind size, temperature and other details to adapt to your taste.

Too long brewing makes the coffee bitter, while low-quality beans, dirty gear or a bad ratio causes thin texture and flat feeling in the mouthfeel.

Pour Over Coffee Calculator: Ratio & Brew Guide

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