Date Calculator
A comprehensive suite of date and time calculation tools, including time difference, working days, date addition and subtraction, and more.
Overview
Time Difference Calculator
Business Days Calculator
Date Addition and Subtraction Calculator
Date Addition and Subtraction Calculator
Adds or subtracts a specified time interval from a given date.
Date Addition and Subtraction
🇨🇳 Shanghai (UTC+8)
🇨🇳 Shanghai (UTC+8)
Calculation History
No history records available
Core Features
Multi-Unit Precise Calculation
Supports independent or combined calculations in six time units: years, months, days, hours, minutes, and seconds, with second-level accuracy
Intelligent Time Handling
Automatically manages complex time logic such as month-end overflow, leap year February 29, and daylight saving time transitions to ensure calculation accuracy
Global Timezone Support
Supports over 200 global timezones, with independent settings for base and result timezones, automatically handling timezone conversions and offsets
Smart History Recording
Automatically saves each calculation result, supports history management and one-click reapplication to improve work efficiency
Application Scenarios
Contract Duration Management
Accurately calculate contract expiry dates, renewal times, and service periods, supporting international contracts across different timezones
Project Timeline Planning
Set project milestones, calculate delivery dates, and schedule work progress, supporting complex project time management
Financial Date Calculations
Calculate loan maturity dates, installment payment times, interest settlement dates, and billing cycle management for financial purposes
Personal Time Management
Calculate countdowns to birthdays, reminders for anniversaries, holiday planning, and important event scheduling for personal affairs
Usage Guide
1.Select a reference date and time (accurate to seconds)
2.Set the reference timezone (auto-detect current timezone)
3.Choose calculation type: add or subtract time
4.Input the amount of time to calculate (years, months, days, hours, minutes, seconds)
5.Select the result display timezone (can differ from the reference timezone)
6.The system automatically performs real-time calculation and displays the result