Free Coffee Tools
Interactive brew-ratio calculators, grind-size references, and dialing-in charts. Built for home baristas and anyone who'd rather weigh the dose once than guess every morning. No signup, no ads, no analytics — every tool runs on your device.
Coffee Cost Per Cup Calculator
What your cup actually costs once the filter, the milk and the power are counted, not just the beans — plus what it adds up to over a year, what you keep by skipping the café, and the day your brewer and grinder finish paying for themselves.
Open toolHow Many Tablespoons of Coffee Per Cup?
Tablespoons, scoops and grams for your real cup size — adjusted for grind and roast, because a tablespoon of coffee isn't a fixed weight. Weigh one spoonful to make it exact, and see how your rule of thumb scores against the SCA standard.
Open toolCoffee Water Temperature Calculator
Your target brew temp by method and roast — plus the exact temperature water boils at your elevation, whether the standard range is even reachable there, and how long to rest the kettle off the boil.
Open toolCaffeine Intake Calculator
Tap the coffee, tea, and energy drinks you've had and get your total against a daily limit built around your weight and life stage — plus a decay timeline showing how long it stays in you for sleep.
Open toolCold Brew Caffeine Calculator
How much caffeine is actually in your cold brew — from your coffee, water, steep time, roast and dilution, measured against a Starbucks, a Dunkin', and the FDA's daily limit. Math from the peer-reviewed Fuller & Rao study.
Open toolCaffeine Half-Life Calculator
Enter what you drank, when, and your metabolism — see caffeine's full decay curve, the clock time it drops below the sleep line, how much is left at bedtime, and a 50%→99% elimination schedule.
Open toolCoffee Grind Size Chart
Pick your brew method and get the grind size, the micron range, an everyday texture match, and how to dial it in — Turkish to cold brew, with an interactive spectrum and a printable chart.
Open toolCoffee to Water Ratio Calculator
Every brew method's ratio in one tool — start from cups (real cup sizes), water, or the coffee you have, with espresso dose-to-yield, a 1–12 cup batch table, and grams/tablespoons/scoops output.
Open toolCoffee Roast Levels Chart
Every roast level from Cinnamon to Italian with its Agtron number, bean drop temperature, crack stage and taste profile, plus a reverse lookup that turns a probe reading into a roast name, and a light vs medium vs dark comparison.
Open toolInteractive Coffee Flavor Wheel
Click the notes you taste — berry, cocoa, floral, smoke — and get a matching roast level, origin, and beans to buy. The SCA flavor wheel, made interactive.
Open toolPour Over Coffee Calculator
Your dose, your water, and a pour-by-pour schedule with the clock time and scale reading for every pour — V60, Chemex, Kalita and Origami, plus Hoffmann's Ultimate V60 and Kasuya's 4:6 with both dials wired up.
Open toolMoka Pot Ratio Calculator
Pick your pot size and roast and get the exact dose, where to stop filling, the ratio your pot actually brews at, and what lands in the cup — nine Bialetti sizes, or measure your own.
Open toolCold Brew Coffee Ratio Calculator
Enter your jar size and get the grams of coffee, the ratio, your concentrate yield, and how many servings it makes after dilution — concentrate or ready-to-drink.
Open toolFrench Press Coffee Ratio Calculator
Enter your water and get the exact grams of coffee, the ratio, and tablespoons — for French press, pour over, drip, AeroPress, and Moka pot.
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