Find your maximum heart rate and training zones for fat burn, cardio and performance from your age, with Karvonen option.
Enter your age and, optionally, your resting heart rate. The zones appear instantly.
A common estimate is 220 minus age.
About 60–70% of max heart rate.
It uses your resting heart rate for more personal zones.
People with heart conditions should ask a doctor before exercising hard.
Estimate calories burned in walking, running, cycling, yoga, gym and more from your weight and duration.
Convert a date and time from one time zone to many cities, including IST, UTC, USA, UK, Dubai and Singapore.
Calculate your waist-hip ratio and see whether it is within the WHO recommended range for men and women.
Convert between 150+ world currencies live.
Calculate CAGR from starting and ending value, or find the final value from a CAGR and time period.
Find how many kg of seed you need for your field from area and seed rate per acre, including extra for wastage.