25 free tools · no signup

Small calculations.
Clearer health choices.

Explore practical, privacy-friendly tools for nutrition, hydration, movement, sleep, body progress, and cycle health. Your entries stay in your browser.

Monthly

Body

BMI Calculator

Two measurements. One useful starting point.

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Weekly

Nutrition

Daily Calorie Calculator

See the energy your average day may need.

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Weekly

Nutrition

Macro Calculator

Turn a calorie target into a practical plate.

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Daily

Daily wellness

Water Intake Calculator

Find a hydration target that fits your day.

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Daily

Nutrition

Protein Intake Calculator

Know your range—not just a single number.

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Daily

Daily wellness

Sleep Calculator

Start tomorrow with tonight’s bedtime.

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Workout days

Movement

Heart Rate Zone Calculator

Know when to ease up—and when to push.

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Daily

Movement

Steps to Distance Calculator

See how far today’s steps carried you.

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Monthly

Body

Waist-to-Height Ratio Calculator

One measurement that adds context to BMI.

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Monthly

Body

Body Fat Percentage Calculator

Look beyond body weight alone.

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Monthly

Cycle health

Period & Cycle Calculator

Plan ahead with a clearer view of your cycle.

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Weekly

Nutrition

Recipe Nutrition Calculator

Turn a whole recipe into a useful serving.

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Daily

Daily wellness

Caffeine Cutoff Calculator

Give tonight’s sleep a better runway.

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Daily

Nutrition

Fiber Intake Calculator

A small number that can shape a better plate.

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Weekly

Body

Weight Goal Timeline Calculator

Make the timeline visible—not urgent.

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Workout days

Movement

Walking Calories Calculator

Put your walk into useful context.

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Workout days

Movement

Walking & Running Pace Calculator

Turn distance and time into a pace you can use.

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Monthly

Body

Healthy Weight Range Calculator

A range leaves room for real bodies.

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Daily

Nutrition

Meal Portion Converter

Make the recipe match the kitchen in front of you.

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Weekly

Daily wellness

Weekly Habit Scorecard

Notice the pattern. Choose one next step.

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As needed

Pregnancy

Pregnancy Calorie Calculator

A pregnancy-specific energy estimate, not a weight-loss target. Uses published 2023 DRI equations rather than adding generic trimester calories to an ordinary adult formula.

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As needed

Pregnancy

Pregnancy Weight-Gain Calculator

Compare your recorded change with a clearly labelled full-term reference—not a verdict about this week's weight or your pregnancy.

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As needed

Pregnancy

Pregnancy Protein Planner

Choose the first-half reference of 46 g/day, the second-half reference of 71 g/day, or your care team's target. These are general reference-weight amounts, not individual requirements.

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As needed

Pregnancy

Pregnancy Week & Due-Date Calculator

Use a reliable last-period date and regular cycle length, or enter the estimated date supplied by your care team. Dates can be entered in Gregorian or Solar Hijri calendars.

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As needed

Pregnancy

Pregnancy Blood-Sugar Tracker

A session-only diary, unit converter and comparison with your own care-team range. No automatic diagnosis, universal target or insulin dosing.

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Clear by design

Useful estimates,
honest limits.

PrivateCalculations run in your browser and are not submitted.
TransparentEvery tool explains its method and limitations.
EducationalResults inform; they never diagnose or prescribe.

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