Free time tools
A growing collection of small, fast tools from the team behind Left. Count down to dates, calculate time between moments, work out age, sleep, fasting, business days, and year progress. For iPhone widgets, habits, streaks, Ahead dates, and Planner, download Left.
Countdowns
Pick a target date, see days, hours, minutes, and seconds remaining.
How many days, hours, and minutes remain until New Year.
How far into the year you are, down to the minute.
What % of the year is over, and what % is left, right now.
Days, weeks, months, or hours until December 25th.
Western and Orthodox Easter dates, with a live countdown.
Spring equinox countdown — Northern or Southern hemisphere.
Summer solstice countdown — pick your hemisphere.
Autumn equinox countdown — works for both hemispheres.
Winter solstice countdown — pick your hemisphere.
Time remaining until January 1st.
How long until October 31st.
Countdown to February 14th.
Fourth Thursday of November (US).
Second Sunday of May (US).
Third Sunday of June (US).
Enter a birthday, see exactly how long until the next one.
Countdown to Saturday morning.
Date math
The exact number of days between any two dates.
Duration in hours between two dates and times.
Pick a target date, see whole weeks remaining.
Working days (Mon–Fri) between two dates.
Add or subtract years, months, weeks, days, hours, or minutes.
Go back in time — find a past date by subtracting a duration.
Your exact age in years, months, and days.
The ISO 8601 week number for any date.
Convert between epoch seconds and human dates.
Life & health
An estimate based on WHO baselines and lifestyle factors.
From LMP, conception date, or ultrasound.
Calculate how long you'll sleep between bedtime and alarm.
Hours and minutes between two fast times.
When does your 16:8, 18:6, or custom fast end?
Real-time countdown of an in-progress fast.
Start noticing what matters.
Download Left on your iPhone to see the time you have left, dates you are looking forward to, build the habits you want to keep, and become a better version of yourself.
Scan with your camera to find Left on the App Store. Or search "Left" on the App Store.