CalcaTools

Hours Calculator | Find elapsed time and decimal hours for payroll

Calculate hours and minutes between two times, minus breaks, in both h:mm and decimal format. Sum shifts, check timesheets and plan schedules — the simple time math done right.

Last updated: June 2026 · Free · No sign-up required

Results

Enter values above and click Calculate to see your result instantly.

Quick reference

ShiftBreakPaid hours
9:00–5:000:307.5
8:30–4:450:457.5
10:00–6:000:008.0

apps Small jobs, done in one click

Everyday calculators are the workshop drawer of the site — quick utilities for the moments when you need a number now and a phone calculator won't cut it. Age, date difference, GPA, fuel cost, time-to-decimal, password strength — pick a tool and you're one click from your answer.

speed Loads in under a second

Every tool is plain HTML + JavaScript with the calculation logic compiled in. No spinner, no "verifying browser" splash, no five-second wait while ads load. Hit the page, fill the form, get the answer. Slow tools waste your time and ours.

devices Works on every device

Responsive design tested down to a 320px-wide phone screen. The input fields use native number/date keyboards on iOS and Android, the calculate button is thumb-sized, and the result still reads big and bold on the smallest screen. No app to download, ever.

sentiment_satisfied No funny business

No newsletter pop-ups, no "create an account to see the answer", no fake countdown, no fake stock counter, no upsell. Two ad slots per page (clearly labelled as Advertisement) keep the site free — that's the whole business model.

Interpretation guide

OutputUse
Decimal hoursPayroll calculations
HH:MMSchedules and timesheets
Break deductionUnpaid lunch or rest periods

lightbulb Working out a 9-to-5 shift with a lunch break

You start at 9:00 AM and finish at 5:00 PM, with a 30-minute unpaid lunch. How many paid hours did you work?

Result: 7.5 paid hours. 9:00 AM to 5:00 PM is 8 hours; subtract the 30-minute break to get 7 hours 30 minutes (7.5).

What this means: Multiply paid hours by your hourly rate to get gross pay. Over a 5-day week that is 37.5 hours — a standard full-time week in many countries once a daily break is removed.

Formula & methodology

Formula: Hours = end time − start time − breaks

The Hours Calculator is built on a well-established calculation method. It uses the formula Hours = end time − start time − breaks to turn your inputs into a reliable result. Calculates the number of hours and minutes between two times. Enter a start time and an end time, with optional break periods, and the tool returns the elapsed time, converts it to decimal hours for payroll, and can The steps are shown on the page so you can follow the reasoning from input to output.

Time calculations convert clock times to minutes, subtract breaks, then convert the result back to hours and minutes or decimal hours.

Authoritative source: timeanddate.com

Frequently asked questions

How do I use the hours calculator?
Enter a start time and an end time, with optional unpaid break periods, and the tool computes Hours = end time − start time − breaks. Working from 9:00 AM to 5:00 PM with a 30-minute lunch gives 7.5 paid hours. The result is shown in both hours:minutes and decimal hours, ready for your timesheet or payroll.
What formula does the hours calculator use?
The Hours Calculator uses the standard Hours = end time − start time − breaks. You enter your values, and the calculator applies the formula step by step, showing the working so you can verify the math and understand how the result is derived rather than trusting a black box.
Is the hours calculator accurate?
The Hours Calculator applies the standard formula: Hours = end time − start time − breaks. It is tested against published worked examples before launch and uses native double-precision arithmetic, so results are accurate to typical precision for the values you enter — with no intermediate rounding that could distort the answer.
Why do my results differ from another calculator?
The Hours Calculator is free, private, and accurate: it runs entirely in your browser (no uploads, no accounts), applies the standard calculation, and explains each step so you can verify the result. Calculates the number of hours and minutes between two times. Enter a start time and an end time, with optional break periods, and the tool returns the elapsed time, converts it to decimal hours for payroll, and can total multiple time intervals such as a There is no limit on usage, and it works on any device.
What does the Hours Calculator do?
Calculates the number of hours and minutes between two times. Enter a start time and an end time, with optional break periods, and the tool returns the elapsed time, converts it to decimal hours for payroll, and can total multiple time intervals such as a. The calculator takes your inputs, applies the standard calculation, and returns a clear result so you can make an informed decision without doing the math by hand.
Is the Hours Calculator free and private?
Yes — the Hours Calculator. There is no sign-up, no paywall, no trial, and no limit on how many calculations you can run. CalcaTools covers its costs with non-intrusive display advertising, so the calculator itself never asks for payment or restricts any feature.
How accurate is the Hours Calculator?
The hours and minutes between two times are computed exactly as a calendar-time difference — end minus start minus breaks — with no rounding in the arithmetic. The result in h:mm and decimal hours is precise to the minute. Accuracy against your real paycheck depends on entering times exactly as the clock recorded them, including breaks.

Explore the full time & date toolkit

Every CalcaTools time and date calculator — exact age and birthday countdowns, date addition and subtraction, work-hours and time-card tracking, plus timers and daily-routine planners — each with instant, step-by-step results.

Age & birthdays

Date math & countdowns

Work hours & time tracking

Timers & daily routine