How do I calculate the time between two times?

Select the 'Time Difference' mode, enter your start time and end time, and the calculator shows you the exact duration between them in hours, minutes, and seconds. It handles overnight spans correctly too — so if your start time is later in the day than your end time, it calculates across midnight.

Can I add more than two time values together?

Yes. The addition mode lets you add multiple time values in a single calculation — useful for totalling up hours across several tasks, shifts, or sessions. Just add each time value and the running total updates as you go.

How do I calculate hours worked between a start and end time?

Use the Time Difference mode. Enter your start time (e.g. 09:00) and your end time (e.g. 17:45) and the calculator tells you the total hours and minutes worked — in this case, 8 hours and 45 minutes. If you have a lunch break to deduct, you can subtract that duration separately using the subtraction mode.

Does this time calculator handle seconds?

Yes. All three fields — hours, minutes, and seconds — are available. For most everyday use cases like tracking work hours or project time you probably only need hours and minutes, but seconds are there when you need them. The result is always displayed in the same H:MM:SS format.

Is this tool free and does it store my data?

It's completely free with no account required. The calculator runs 100% in your browser — your inputs are never sent to any server, saved in a database, or shared with anyone. Nothing leaves your device. You can close the tab and nothing is retained.

⚡ Speed Up Workflow⚡ Workflow

Time Calculator

Add, Subtract, and Compare Hours & Minutes

Base Duration

Temporal Offset

Awaiting Temporal Injection

What can this tool do?

Add hours and minutes by entering durations — total updates live
Find the time between two times by entering a start and end time
Subtract a time duration from another to find what remains (e.g., deducting breaks)
Work in hours, minutes, and seconds — as much or as little precision as needed
Get instant results in your browser — 100% client-side, no data sent anywhere

Solving the 60-Minute Logic

Time arithmetic is deceptively annoying. Hours roll over at 60, not 100, which means you can't just subtract two times like regular numbers. Figuring out durations between start and end times often involves mental gymnastics.

This time calculator handles all of it. Add durations together, subtract one time from another, or find the exact gap between a start and end time. It works in hours, minutes, and seconds, covers overnight spans, and gives you a clean result instantly.

Frictionless Auditing

Whether you're totalling billable hours or checking study logs, the module ensures absolute accuracy. Working with dates too? You can calculate your exact age with our specialized suite.

100% PRIVATE CALCULATION

Operational Workflow

CHOOSE CALC TYPE

Pick addition, subtraction, or time gap between start and end.

ENTER FIRST VAL

Type your first duration or start time. HH, MM, and SS fields available.

ENTER SECOND VAL

Add the second duration or end time. Results update live as you type.

READ RESULT

Answer appears in hours, minutes, and seconds. Clean and ready to copy.

Core Capabilities

Triple Mode Logic

Add, subtract, or find gap. Switch modes without leaving the page.

60-Min Roll-over

Correct arithmetic for time values. Overnight spans handled automatically.

Precision Seconds

Includes seconds for video editing or high-fidelity tracking needs.

Browser-Only

100% private. No account. No data stored or transmitted.

Real-World Application

"Freelance Invoicing Accuracy"

James, a freelance video editor, had four sessions: 2h 45m, 1h 10m, 3h 20m, and 55m. He needed the total but kept second-guessing his mental maths. He used the Utilx time calculator in addition mode and got 8 hours and 10 minutes instantly. No formula needed. Need to convert minutes to decimal hours? Try our unit converter.

Related Tools

DATE DELTA AGE ANALYSIS ALL MODULES

FAQs

Switch to 'Time Gap' mode, enter your start and end times, and the calculator shows the duration. It handles overnight spans (e.g., 23:00 to 07:00) automatically.

Data & Docs