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Estimate your one-rep max from any set, and get the working weights for every training percentage.

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Find the daily calorie intake at which your weight stays stable, based on your body and activity level.

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Estimate the calories your body needs each day from your age, sex, size and activity level.

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Work out a daily protein target in grams from your body weight and training goal.

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Split a daily calorie target into grams of carbohydrate, protein and fat using common ratios.

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Enter a distance and finish time to get your pace per mile and per kilometre, plus your average speed.

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Convert your dog’s age to human years using the 2020 epigenetic formula or the size-adjusted classic method.

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Calculate alcohol by volume from original and final gravity readings, with attenuation and calories.

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Estimate blood alcohol concentration from drinks, body weight, sex and time elapsed using the Widmark formula.

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A weight-based answer to how much water you should drink daily, adjusted for exercise and climate.

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