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.
Open toolWaist-to-Height Ratio
A simple, powerful indicator of healthy abdominal fat.
Open toolBMR / TDEE
Daily calories your body burns at rest and with activity.
Open toolIdeal Weight Estimates
Four classic formulas for a healthy target weight.
Open toolHeart-Rate Zones
Training zones based on your age and max heart rate.
Open toolFitness Test Scoring
Score your push-up test against age-group norms.
Open toolMulti-Currency Converter
Convert between 30+ world currencies with live rates.
Open toolSalary Converter
Convert a salary between currencies with annual/monthly view.
Open toolMonthly ↔ Annual Salary
Flip between monthly and yearly income instantly.
Open toolHourly ↔ Monthly Income
See what an hourly rate adds up to per month and year.
Open toolIncome Comparison
Compare two income scenarios side by side.
Open toolAge Calculator
Exact age in years, months, days — and much more.
Open toolBirthday Calculator
The day you were born, your next birthday, and your sign.
Open toolDate Difference
Days, weeks, months, and years between two dates.
Open toolCountdown
Live countdown to any date and time.
Open toolWorking-Days Calculator
Business days between two dates (weekends excluded).
Open toolUnit Converter
Length, weight, temperature, area, volume, speed and more.
Open toolPercentage Calculator
Three quick modes: "of", "is what %", and "% change".
Open toolDiscount Calculator
Final price and money saved on any discount.
Open toolTip Calculator
Tip amount and per-person total for any bill.
Open tool