Stress Management

Calculate breath cycles and counts for pranayama ratios (e.g. 4-4-4-4 box breathing). Free online yoga and meditation calculator with instant, accurate results.

Rough HRV estimate from resting heart rate, sleep, and stress level. Free online yoga and meditation calculator with instant, accurate results.

Reproduce mean kilometre/mile pace and speed from one completed source-owned race result and retained event distance, with an optional same-result displayed-pace comparison—without creating targets, splits, predictions or training advice.

Calculate a user-entered heart-rate-reserve percentage range with the Tanaka age-estimated maximum. Shows formula and limits; never prescribes training zones.

Plan a bedtime or wake time from a chosen sleep duration and sleep-latency allowance, with CDC/AASM age-range context and no fixed-cycle claims.

Compare adult BMR equations and a selected activity-multiplier TDEE scenario without generating calorie, macro, or meal prescriptions.

Apply entered in-network deductible, coinsurance, copays, and out-of-pocket maximum terms to an entered allowed-charge scenario, plus premiums.

Allocate the 168 hours in a seven-day week across work, commute, rest, care and other activities, then save observed and proposed schedules.

Simple in-browser notepad with auto-save. Write quick notes that persist in your browser. Download as text file. No signup needed.

Compare driving, ownership, shared rides, transit passes and commute alternatives with entered costs, matching periods and separate travel time.

Calculate weekly gross pay from entered regular hours, overtime hours and multiplier, then model the same pattern over your chosen work weeks.