How to Use TimeAndPlan
TimeAndPlan is eight small, single-purpose calculators for time zones, flights, driving, work hours, and dates — no account, nothing saved on a server. Each one is built to be usable without instructions, but if you want the short version of how each tool works, here it is.
Time Converter
Compares local time across two or more cities on a draggable, color-coded timeline.
- Add the cities you want to compare using the search field.
- Drag any city's timeline, or use the date/time picker, to change the moment being compared — every city updates together.
- Copy the page link to share your exact city list and selected time with someone else.
Flight Hours Planner
Works out your local arrival date and time from a departure city, time, and flight duration.
- Pick a departure city and destination city.
- Set the departure date, time, and flight duration in hours and minutes.
- Read the local date, time, and time zone shown at both ends of the flight.
Roadtrip Pricer
Estimates a drive's fuel cost from distance, fuel efficiency, and fuel price.
- Enter the distance you're driving, choosing km or miles.
- Enter your vehicle's fuel efficiency in MPG, L/100km, or km/L.
- Enter the price per liter or gallon to see the estimated trip cost and fuel used.
Time Calculator
Adds, subtracts, or finds the difference between clock times, or normalizes a raw duration.
- Pick a mode: Add time, Subtract time, Time between, or Duration calculator.
- Enter a clock time and a duration (or two clock times, for "Time between").
- Read the result — it updates instantly as you type.
Work Hours Calculator
Calculates hours worked in a single shift, or a full weekly timesheet with breaks.
- Choose "Single day" or "Weekly timesheet."
- Enter start time, end time, and an unpaid break (in minutes) for each day worked.
- Read the total as both a duration and decimal hours.
Timespan Calculator
Finds the difference between two dates in days, business days, weeks, months, or years.
- Pick a mode from the tabs.
- Set a From date and a To date.
- Read the result — switch modes any time to see the same range in a different unit.
Days Calculator
Adds or subtracts a number of days from a date, or finds a date X days from another date.
- Choose "Add/subtract days" or "X days from a date."
- Pick a starting date and enter the number of days (negative to go backward).
- Read the resulting date.
Age Calculator
Gives a full age breakdown — years, months, days, plus total days/weeks/hours lived and a next-birthday countdown.
- Enter a birth date.
- Optionally change the "As of date" to see age on a date other than today.
- Read the full breakdown, including days until the next birthday.