Everyday life Calculators

Calculate exact time difference between a start and end date-time.

Calculate exact age in years, months, and days between two dates.

Calculate BMI with unit options, weight category, healthy range, BMI Prime, and Ponderal Index.

Calculate tip amount, total bill, and split-per-person amount.

Find price per unit from total price and quantity.

Calculate elapsed time between two clock times.

Calculate elapsed time between two clock times.

Calculate elapsed time between two clock times.

Calculate elapsed time between two clock times.

Add or subtract days, hours, and minutes from a date-time.

Calculate BMI from weight and height.

Calculate BMI from weight and height.

Count business days between two dates (Monday to Friday).

Calculate total working weekdays in a date range.

Add hours and minutes to a starting clock time.

Calculate body surface area using the Mosteller formula.

Convert a clock time between UTC offsets.

Count days elapsed since a selected date.

Count days remaining until a selected date.

Estimate maintenance calories from profile and activity level.

Estimate total daily energy expenditure.

Find estimated maintenance calories per day.

Estimate target calories after applying a daily deficit.

Calculate basal metabolic rate with Mifflin-St Jeor.

Split calories into protein, carbs, and fat targets.

Add or subtract days from a selected date.

Estimate pregnancy due date from last period, ultrasound, conception date, or IVF transfer date.

Estimate pregnancy progress from LMP date.

Estimate ovulation, fertile window, and related cycle dates.

Estimate conception date from LMP date.

Calculate weekly work hours from daily clock-in/out values.

Estimate worked hours from start/end clock times.

Estimate calories from selected ingredient servings.

Convert feet/inches into centimeters and meters.

Calculate running pace and speed.

Calculate running pace per mile or kilometer and average speed.

Estimate ideal body weight using the Devine formula.

Estimate bra band and cup size from bust measurements.

Estimate one-rep max from lifted weight and reps.

Plan better bedtimes or wake-up times using estimated sleep cycles.

Estimate body fat percentage from BMI, age, and sex.

Count days between two dates with optional inclusive counting.

Estimate trip fuel usage and total fuel spend.

Estimate calories burned from body weight, duration, and exercise intensity.

Estimate ideal weight from height and sex using the Devine formula.

Estimate a practical daily protein target from body weight and activity.

Estimate conception date from due date or pregnancy timing.

Estimate female body shape from bust, waist, high-hip, and hip measurements.

Estimate the next period, ovulation day, and fertile window.

Estimate fuel economy from distance traveled and fuel used.

Solve for speed, distance, or time from the other two values.