Free tools

Calculators and converters

No sign-up, nothing to install. Built from the questions we get asked most about measuring, brewing, training and keeping an open bottle drinkable.

5 tools

Kitchen Measurement Converter
Free converter for teaspoons, tablespoons, cups, millilitres and fluid ounces, plus per-ingredient gram weights for flour, sugar, salt, butter and honey.
Open the tool
Latte & Cappuccino Ratio Calculator
Pick your drink and cup size and get the exact espresso, steamed milk and foam amounts for a latte, cappuccino, flat white, macchiato or mocha.
Open the tool
Matcha Ratio Calculator
Work out exactly how much matcha powder, water and milk to use for usucha, koicha, a matcha latte or an iced matcha — with the right water temperature.
Open the tool
Resistance Band Weight Calculator
Estimate the dumbbell equivalent of a resistance band at any stretch length, for single or stacked bands — with the reason band resistance is not a fixed number.
Open the tool
Open Wine Freshness Calculator
Tell us the wine style, how you sealed it and where you stored it, and get an estimate of how many days an opened bottle stays good — plus how to extend it.
Open the tool

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Free tools

Calculators and converters

Free to use, no sign-up, nothing to install. Built from the questions we get asked most about measuring, brewing, training and keeping an open bottle drinkable.

Kitchen Measurement Converter

Free converter for teaspoons, tablespoons, cups, millilitres and fluid ounces, plus per-ingredient gram weights for flour, sugar, salt, butter and honey.

Open the tool

Latte & Cappuccino Ratio Calculator

Pick your drink and cup size and get the exact espresso, steamed milk and foam amounts for a latte, cappuccino, flat white, macchiato or mocha.

Open the tool

Matcha Ratio Calculator

Work out exactly how much matcha powder, water and milk to use for usucha, koicha, a matcha latte or an iced matcha — with the right water temperature.

Open the tool

Resistance Band Weight Calculator

Estimate the dumbbell equivalent of a resistance band at any stretch length, for single or stacked bands — with the reason band resistance is not a fixed number.

Open the tool

Open Wine Freshness Calculator

Tell us the wine style, how you sealed it and where you stored it, and get an estimate of how many days an opened bottle stays good — plus how to extend it.

Open the tool