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Lifestyle and personal utilities

Practical, free tools with clear explanations. Choose a tool to get started.

Estimate trip fuel use and cost from distance and vehicle consumption.

Calculate body mass index from weight and height.

Estimate adult maintenance calories using a common resting-energy formula and activity factor.

Estimate a due date from the first day of the last menstrual period.

Estimate a next period date from the last period and typical cycle length.