Work Hours, Timesheet & Payroll Calculators

Choose the right calculator for daily shifts, weekly timesheets, overtime, payroll, hourly pay, and time differences. Free, fast, and no signup required.

7.5 hrs
$0.00
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Date and time calculator

Hours Between Two Dates

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Total Hours32.00
1 days8 hours0 min
Total Pay$0.00

Table of Contents

Part-Time Calculators

Specialized tools for part-time workers, freelancers, and flexible schedules

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Part-Time Hours Calculator

Calculate your part-time work hours with flexible start/end times. Perfect for irregular schedules and shift-based work.

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Part-Time Salary Calculator

Estimate your part-time earnings based on hours worked and hourly rate. Includes weekly, monthly, and annual projections.

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Part-Time Shift Planner

Plan and track your part-time shifts across multiple days. Visualize your weekly schedule and total hours at a glance.

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Part-Time Hourly Rate Calculator

Find out your effective hourly rate from your part-time salary. Compare offers and negotiate better pay for flexible roles.

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Part-Time Weekly Planner

Organize your part-time work week efficiently. Track hours across multiple jobs and ensure you stay within legal limits.

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Part-Time Overtime Calculator

Calculate overtime pay for part-time workers. Know when you qualify for overtime and how much extra you'll earn.

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Latest From Blog

Helpful guides for better time tracking and payroll estimates

Work Hours Guide

How to Calculate Work Hours Accurately

Learn the simple formula for calculating work hours, break deductions, decimal hours, weekly totals, overtime, and payroll-ready numbers.

Read guide →

What is a work hours calculator?

A work hours calculator is a free online tool designed to quickly and accurately compute your total daily or weekly working hours. By entering your shift start time, end time, and any break deductions, the calculator automatically determines the exact time worked and helps estimate your total payroll based on your hourly wage. Whether you need a timesheet calculator for weekly tracking, a payroll calculator for earnings, or an overtime calculator for extra hours, these tools simplify every step of time and pay management.

How Work Hours Are Calculated

The universal formula behind every calculator on this site

In This Section

Net Work Hours = End Time − Start Time − Unpaid Breaks

For example, if you clock in at 9:00 AM and clock out at 5:30 PM with a 30‑minute unpaid lunch, your gross time is 8.5 hours and your net work hours are 8.0 hours.

Converting to Decimal Hours

Payroll systems use decimal hours. Divide remaining minutes by 60: 7 hours 45 minutes = 7.75 decimal hours. Use our time duration calculator to convert any time span instantly.

Weekly & Monthly Totals

Add each day's net hours together for a weekly total. Our timesheet calculator does this automatically across 5–7 days. For monthly estimates, multiply weekly hours by the number of working weeks (typically 4.33).

Overtime Calculation

Hours beyond the standard threshold (usually 40/week in the US, 48/week in the UK) qualify for overtime pay — typically 1.5× your regular rate. Use the overtime calculator to see exact amounts. Rules vary by country; check our US, UK, or Canada pages for local standards.

Who Uses a Work Hours Calculator?

Common use cases for employees, freelancers, and businesses

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Employees

Track daily shifts, verify timesheets, and ensure accurate pay. Calculate your hours before submitting.

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Freelancers

Log billable hours and calculate project earnings. Use the payroll calculator to invoice clients accurately.

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Payroll Teams

Process multi‑employee timesheets and overtime. The timesheet calculator handles weekly totals instantly.

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HR Managers

Monitor compliance with labor regulations. Check country‑specific rules for standard hours and break requirements.

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Shift Workers

Handle overnight and rotating shifts. Our calculator correctly handles times that cross midnight automatically.

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Part‑Time Workers

Track irregular schedules across multiple jobs. Know exactly when you hit overtime thresholds with the overtime calculator.

Frequently Asked Questions

Quick answers to common questions

How do I calculate my work hours?
Enter your start time, end time, and break duration into our Work Hours Calculator. The tool instantly calculates your total work hours. For example, 9:00 AM to 5:00 PM with a 30‑minute break = 7.5 hours.
How many hours did I work this week?
Use our Timesheet Calculator to enter your daily start and end times for each day. It automatically totals your weekly work hours for timesheets and reporting.
How is overtime calculated?
Overtime is typically 1.5× your regular rate for hours beyond 40/week (US). Our Overtime Calculator lets you customize the multiplier and threshold to see exact overtime earnings.
How do I calculate my hourly pay?
Multiply hours worked by your hourly rate. Our Payroll Calculator does this instantly — enter total hours and rate to get gross pay.
How do I convert minutes to decimal hours?
Divide the minutes by 60 and add to the hours. For example, 7 hours 45 minutes = 7 + (45÷60) = 7.75 decimal hours. Use our Time Duration Calculator for instant conversion.
How do lunch breaks affect my work hours?
Unpaid lunch breaks (typically 30–60 minutes) are subtracted from your total time. If you work 9 AM to 5 PM with a 1‑hour unpaid lunch, your paid hours are 7, not 8.
What is the standard work week by country?
It varies: the US uses a 40‑hour standard, the UK caps at 48 hours, Australia is 38 hours, and many EU countries are 35–40 hours. Check our country-specific calculators for local details.
Can I calculate pay for overnight shifts?
Yes. If your end time is earlier than your start time, our calculator assumes the shift crosses midnight and calculates accordingly — a 10 PM to 6 AM shift is correctly computed as 8 hours.
How do I calculate monthly work hours?
Multiply your weekly hours by the average weeks per month (4.33). A 40‑hour work week = approximately 173.3 hours per month. Use our calculator for exact daily figures, then multiply.
What is the difference between gross and net work hours?
Gross hours = total time from clock‑in to clock‑out. Net hours = gross hours minus unpaid breaks. Payroll is based on net hours.
Are these calculators free to use?
Yes! All our calculators are 100% free, require no signup, and work entirely in your browser. Your data stays on your device — we never collect or store any information.
Do these calculators work on mobile?
Absolutely. All calculators are fully responsive and work on phones, tablets, and desktops. Bookmark the page for quick access anytime.