1Win

1Win is a utility app where the BMI calculator doubles as a measurement tracker, every calculation is saved with a timestamp, giving you a growing record of your BMI over time rather than a single snapshot. The history feature is the key differentiator: rather than just showing today's result and forgetting it, 1Win stores each entry so you can compare your BMI from last month to this month and see whether your efforts are producing measurable change. Both metric and imperial inputs are supported: switch between kg/cm and lb/ft+in based on your preference without any loss of accuracy, 1Win handles the unit conversion internally before applying the BMI formula. The unit converter adds another measurement utility: 8 conversion categories including Weight and Length, with 10+ units each and live results, useful for tracking weight in different systems or understanding height measurements across formats. 1Win is fully offline and requires no account, the BMI history log and all nine other tools are available immediately with no setup.