Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results. Input never leaves your device — everything runs locally in your browser.
Countdown to a specific date and time with live days, hours, minutes, and seconds display. Perfect for event countdowns and deadlines. Input never leaves your device — everything runs locally in your browser.
Convert between hundreds of units — length, mass, volume, temperature, area, speed, time, digital data, and more with a single click.
Configurable countdown timer with hours, minutes, and seconds input. Features start, pause, and reset controls with visual progress bar. Input never leaves your device — everything runs locally in your browser.
Calculate the exact duration between two times. Handles overnight time spans and displays results in hours, minutes, and seconds. Numbers never leave your device — every calculation runs locally in your browser.
Count down the time until any future moment in days, hours, minutes, and seconds — launches, deadlines, events. See 45 days to launch live — free, local, no signup.
Seconds, minutes, hours, days, weeks, months, and years. Results include decimal precision for billing and scientific use.
1 hour = 3,600 seconds (60 minutes × 60 seconds). The converter uses exact factors for all calculations.
Months use the average of 30.44 days (365.25 ÷ 12) and years use 365.24 days (accounting for leap years). These are approximate — exact conversion depends on the specific month and year.
Yes. You can enter decimal values like 1.5 hours or 0.5 days for precise conversions. Enter seconds to see the equivalent in all other units simultaneously.
Unix Time Converter
Convert Unix timestamps to human-readable dates and back. Shows UTC, ISO 8601, locale, date, and time formats. Milliseconds, seconds, and ISO 8601 convert both directions with timezone clarity — local math, free, no signup.
Time Duration Calculator
Calculate the exact duration between two times. Handles overnight time spans and displays results in hours, minutes, and seconds. Numbers never leave your device — every calculation runs locally in your browser.
Last updated October 2026