cron and scheduling tools Tools

Calculate your exact age in years, months, days, hours, and minutes. Find your zodiac sign, day of birth, and countdown to next birthday.

Guided breathing exercises with animated visual cues. Practice Box Breathing, 4-7-8, Wim Hof, Deep Breathing, and Resonant Breathing with audio phase cues and session tracking.

Create countdown timers to any date or event. Track time remaining in days, hours, minutes, and seconds. Perfect for deadlines, events, and holidays.

Generate cron expressions visually. Interactive UI for configuring minutes, hours, days, months, and weekdays for job scheduling.

Parse cron expressions into plain English descriptions, field breakdowns, and validation feedback without making any server request.

Cron next run calculator shows the exact times a cron expression fires next, in your local zone, UTC, or any IANA time zone, with DST gotchas flagged. Free, no signup.

Calculate how many days are left until any future date or how many days have passed since a past date. Includes week and month approximations.

Calculate exponential backoff retry schedules for API calls. Set base delay, multiplier, and max cap to see per-attempt delays with full, equal, or no jitter. Free online tool.

Calculate your daily electrolyte targets during intermittent or extended fasting. Personalized for body weight, activity level, keto status, and sweat rate. Includes a morning/midday/evening dosing schedule.

Calculate your eating and fasting windows for any intermittent fasting protocol. Supports 16:8, 18:6, 20:4, OMAD, 5:2, and more. See exact eating window times and metabolic stages reached.

Calculate Equated Monthly Installments (EMI) for home loans, car loans, personal loans, and education loans. View amortization schedule with principal vs interest breakdown.

Calculate monthly mortgage payments, total interest, and view a full amortization schedule. Supports fixed-rate loans with customizable down payment, interest rate, and loan terms.

Free online stopwatch with lap tracking, split times, and millisecond precision. Start, stop, reset, and record laps instantly in your browser.

Boost your productivity with the Pomodoro Technique. Customizable work and break intervals, session tracking, audio notifications, and focus statistics.

Analyze API rate limit headers instantly to see remaining quota, reset countdown, and usage percentage. Supports X-RateLimit, RateLimit, and Retry-After.

Calculates a week-by-week calorie increase schedule to safely restore your metabolism after dieting or fasting, preventing fat regain while returning to maintenance calories.

Build weekly schedules with sessions, times, locations, and notes. Preview the plan instantly and export it as Markdown or JSON.

Take a picture with your webcam in the browser. Countdown timer for self-portraits, instant PNG download. Nothing is uploaded, 100% private.