Reckon anything.

Your real net pay after tax — US, UK (incl. Scotland) and India.

EMI, total interest, and a full amortisation schedule — with integrated prepayment (reduce EMI or tenure) and multi-loan compare.

Calculate BMI (weight ÷ height²) and classify it two ways — WHO (overweight ≥ 25, obese ≥ 30) and Asian/ICMR (overweight ≥ 23, obese ≥ 25, lower because Asian populations carry higher metabolic risk at a lower BMI). Plus your healthy weight range in kg for your height. A screening ratio that ignores muscle and fat distribution — not a diagnosis; pair it with the body-fat calculator.

Convert between length, weight, temperature, volume, area and speed units both directions — with the exact SI/NIST conversion factor, a table of nearby values, and a live re-converter. Temperature uses the affine °C/°F/K formula (not a naive multiply), and US and UK volume units (gallon, pint, fluid ounce) are handled distinctly. Computed entirely in your browser.

US 4.0-scale GPA — weighted or unweighted, cumulative, with letter grades.

Exact age as years, months and days from a birth date to any date, with total days and weeks lived and a next-birthday countdown. A baby-age mode reads the age in weeks and months, and a corrected-age mode adjusts a preterm infant for prematurity (chronological − (40 − gestational weeks), to ~24 months). Correct month-length borrow, leap-year and Feb-29 handling on DST-safe UTC math, computed entirely in your browser.