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Time Converter

Convert between seconds, minutes, hours, days, weeks, and more.

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— min
Quick Conversion Table
Based on current input
Unit Value

Time Conversion Guide – Convert Seconds, Minutes, Hours, Days, Weeks & More

Understanding time units and how to convert between them is essential for accurate time calculations in daily life, work, and science. This Time Conversion Guide helps you easily convert between seconds, minutes, hours, days, weeks, months, and years using clear examples and explanations. Use it as a reference for scheduling, project management, time tracking, or any time conversion calculation.

Quick Time Conversion Cheat Sheet

Here’s a quick reference chart for the most common time unit conversions. These are exact or average values used by our Time Conversion Calculator for accurate results.

  • 1 minute (min) = 60 seconds (s)
  • 1 hour (h) = 60 minutes = 3,600 seconds
  • 1 day = 24 hours = 86,400 seconds
  • 1 week = 7 days = 168 hours
  • 1 month (average) ≈ 30.436875 days ≈ 2,629,746 seconds
  • 1 year (average) ≈ 365.2425 days ≈ 31,556,952 seconds

Note: “mo” and “yr” represent average calendar values (Gregorian system). Actual months or years may vary slightly based on leap years or month length.

How Time Conversions Are Calculated

All time conversions are performed using a consistent base unit: seconds (s). Your entered value is first converted into seconds using a precise conversion factor, and then into the target unit. This ensures accurate and consistent results across all units.

Examples: 2 hours → 2 × 3,600 = 7,200 seconds → 120 minutes. 500 milliseconds (ms) → 0.5 seconds → 0.0083 minutes.

Our Time Conversion Calculator supports a wide range of time measurements including milliseconds (ms), microseconds (µs), nanoseconds (ns), minutes, hours, days, weeks, months, and years. Whether you’re calculating working hours, project duration, or time differences, it provides instant, accurate conversions.

When to Use Each Time Unit

Knowing when to use each unit of time helps ensure your time conversion calculations are meaningful and precise. Here’s a quick breakdown of the most common uses:

  • ns / µs / ms: Used in programming, computing, and electronics to measure latency or processing time.
  • s / min / h: Perfect for timers, sports, workouts, or cooking durations.
  • day / week: Common for schedules, work tracking, or project timelines.
  • month / year: Ideal for contracts, billing cycles, salaries, or long-term planning. Use averages unless calendar-precise values are needed.

The QuickCalculatIt Time Converter makes it easy to convert between any time units — from seconds to hours or days to weeks — instantly and accurately. Whether you’re working on scientific data, time tracking, scheduling, or payroll calculations, this tool ensures consistent, reliable results. Try our Time Conversion Calculator now to simplify your time measurement and duration conversions.

Time – Full History