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Handy tools for everyday life

A growing collection of simple calculators and converters — built with care, entirely in your browser.

BMI + Healthy Weight

Body mass index and healthy weight range for your height.

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Waist-to-Height Ratio

A simple, powerful indicator of healthy abdominal fat.

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BMR / TDEE

Daily calories your body burns at rest and with activity.

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Ideal Weight Estimates

Four classic formulas for a healthy target weight.

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Heart-Rate Zones

Training zones based on your age and max heart rate.

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Fitness Test Scoring

Score your push-up test against age-group norms.

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Multi-Currency Converter

Convert between 30+ world currencies with live rates.

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Salary Converter

Convert a salary between currencies with annual/monthly view.

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Monthly ↔ Annual Salary

Flip between monthly and yearly income instantly.

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Hourly ↔ Monthly Income

See what an hourly rate adds up to per month and year.

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Income Comparison

Compare two income scenarios side by side.

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Age Calculator

Exact age in years, months, days — and much more.

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Birthday Calculator

The day you were born, your next birthday, and your sign.

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Date Difference

Days, weeks, months, and years between two dates.

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Countdown

Live countdown to any date and time.

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Working-Days Calculator

Business days between two dates (weekends excluded).

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Unit Converter

Length, weight, temperature, area, volume, speed and more.

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Percentage Calculator

Three quick modes: "of", "is what %", and "% change".

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Discount Calculator

Final price and money saved on any discount.

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Tip Calculator

Tip amount and per-person total for any bill.

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