Multiple Time Duration Calculator

Welcome to our Multiple Time Duration Calculator – a free and easy-to-use online tool that helps you calculate and sum the intervals between various sets of times. It presents the results in four formats: HH:MM:SS, Hours, Minutes, and Seconds.

This tool is perfect for calculating work hours, travel durations, events, or any task requiring cumulative time tracking.
It uses a 12-hour clock format (AM/PM), with the ability to select the current time via the 🕐 clock icon in both the start and end fields. You can easily delete any intermediate time set by clicking the ‘X‘ button and copy final results using the clipboard icon 📋. To reset and start fresh, just click the ‘Clear‘ button.

Note: This calculator supports time intervals under 24 hours. For durations exceeding 24 hours, please use our
Date and Time Duration Calculator.

For basic time duration between two values in HH:MM:SS, hours, minutes, or seconds format, try our
Time Duration Calculator.

Features of the Multiple Time Duration Calculator

✔️ Easy Time Input: Enter custom times manually or click the clock icon 🕐 to use the current time.
✔️ Multiple Time Sets: Add and calculate multiple start-end time durations in sequence.
✔️ Instant Results: Automatically displays totals in HH:MM:SS, hours, minutes, and seconds.
✔️ Copy & Clear: Use 📋 to copy results or Clear to reset everything instantly.
✔️ AM/PM Support: 12-hour format input with dropdown for selecting AM or PM.

How to Use the Multiple Time Duration Calculator – Step-by-Step Guide

Step 1: Set the Start Time using either the clock icon 🕐 or manual input fields (Hours, Minutes, Seconds, AM/PM).

Step 2: Set the End Time the same way as the Start Time.

Step 3: Click the Calculate button. The tool will instantly display time duration in all 4 formats.

Step 4: To add more time intervals, repeat Steps 1–3. Use the X button to remove any unwanted sets.

Step 5: Click the clipboard 📋 icon to copy any result format. Use the Clear button to reset the calculator.

Manual Example – Calculate Time Durations Step-by-Step

This example walks through calculating the total time for two sets:

Set 1: 12:51:55 AM to 9:17:22 PM

Convert to 24-Hour Format: 12:51:55 AM = 00:51:55, 9:17:22 PM = 21:17:22
Subtract Times: 21:17:22 – 00:51:55 = 20 hours, 25 minutes, 27 seconds

Set 2: 1:45:23 PM to 3:55:11 AM

Convert to 24-Hour Format: 1:45:23 PM = 13:45:23, 3:55:11 AM = 03:55:11 (next day)
Subtract Times: 03:55:11 (next day) – 13:45:23 = 14 hours, 9 minutes, 48 seconds

Final Total Duration

Hours: 20 + 14 = 34
Minutes: 25 + 9 = 34
Seconds: 27 + 48 = 75 → 1 min 15 sec (carry 1 minute)
Final Result: 34 hours, 35 minutes, 15 seconds

Why Use Our Multiple Time Duration Calculator?

✅ 100% Free & No Sign-Up – Use without any account or fees.
✅ Lightning-Fast Results – Immediate outputs in all formats.
✅ Mobile-Friendly – Designed for all devices, including smartphones.
✅ Privacy-Protected – No data is stored or transmitted.

Popular Uses for This Calculator

📌 Summing Work Hours for Daily Logs
📌 Calculating Travel or Transit Durations
📌 Event Scheduling & Management
📌 Workout or Study Session Time Tracking

FAQs – Multiple Time Duration Calculator

1. What is the Multiple Time Duration Calculator?

It’s a free tool that calculates the total time passed between multiple start and end times in different formats.

2. Can I use this tool for durations longer than 24 hours?

No, this tool supports intervals within a single day. For more, use our Date & Time Duration Calculator.

3. Is there a limit to how many time sets I can enter?

No limit! Add as many time intervals as needed.

4. Is the tool mobile-friendly?

Yes, it works smoothly on both desktop and mobile devices.

5. Will my data be stored?

No, all calculations happen on your device. Nothing is saved or shared.

Conclusion:
Our Multiple Time Duration Calculator is your go-to tool for accurately summing multiple time intervals. Whether for personal productivity or event planning, it’s built to deliver fast, reliable results in HH:MM:SS, hours, minutes, or seconds.

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