Convert Time Units

Calculator for converting time units with comprehensive conversion tables and formulas

Time Unit Converter

What is calculated?

The Time Unit Converter converts an entered time span into all available time units. Precise conversions and mathematical relationships between units are displayed.

Enter time span
Time span:
⇓

Convert to all units

You can enter all fields or just individual units (e.g., only 120 hours).
Conversion Results
Days:
Hours:
Minutes:
Seconds:
Automatic conversion to all standard time units with configurable precision

Conversion Info

Features

Time Unit Conversion:

  • All standard time units
  • Flexible input options
  • Precise decimal calculation
  • Simultaneous multiple conversion

Application: Conversion of working hours, project durations, scientific measurements, and technical calculations.

Special Features
Flexible input:
Any combination of units
Simultaneous conversion:
All results at once
High precision:
Up to 10 decimal places
Related Calculators

→ Add time spans
→ Multiply time spans
→ Calculate time difference

Time Unit Conversion Formulas

Basic Conversions
\[1 \text{ Min} = 60 \text{ Sec}\] \[1 \text{ Hr} = 60 \text{ Min}\] \[1 \text{ Day} = 24 \text{ Hr}\]
Seconds Base
\[T_{\text{sec}} = s + 60m + 3600h + 86400d\] Everything in seconds
To Minutes
\[T_{\text{min}} = \frac{T_{\text{sec}}}{60}\] Seconds to minutes
To Hours
\[T_{\text{hr}} = \frac{T_{\text{sec}}}{3600}\] Seconds to hours
To Days
\[T_{\text{days}} = \frac{T_{\text{sec}}}{86400}\] Seconds to days
General Formula
\[T_{\text{target}} = T_{\text{source}} \times \frac{F_{\text{source}}}{F_{\text{target}}}\] With conversion factors

Detailed Calculation Example

Example: Convert 2 days, 8 hours, 30 minutes

Input time span:

  • 2 days
  • 8 hours
  • 30 minutes
  • 0 seconds

Conversion to seconds:

  • 2 days = 2 × 86,400 = 172,800 sec
  • 8 hours = 8 × 3,600 = 28,800 sec
  • 30 minutes = 30 × 60 = 1,800 sec
  • Total: 203,400 seconds

Conversion results:

In days: 203,400 ÷ 86,400 = 2.354167 days

In hours: 203,400 ÷ 3,600 = 56.5 hours

In minutes: 203,400 ÷ 60 = 3,390 minutes

In seconds: 203,400 seconds

Interpretation: The time span 2D 8:30:00 equals 2.35 days, 56.5 hours, 3,390 minutes, or 203,400 seconds.

Conversion Table

Standard time units and their relationships
From To Seconds To Minutes To Hours To Days
1 Second 1 0.01667 0.000278 0.0000116
1 Minute 60 1 0.01667 0.000694
1 Hour 3,600 60 1 0.04167
1 Day 86,400 1,440 24 1
Conversion factors:
  • Sec → Min: ÷ 60
  • Min → Hr: ÷ 60
  • Hr → Days: ÷ 24
  • Min → Sec: × 60
  • Hr → Min: × 60
  • Days → Hr: × 24

Extended Time Units

Additional time units and their conversions

Week:

= 7 days
= 168 hours
= 604,800 seconds

Month (average):

≈ 30.44 days
≈ 730.5 hours
≈ 2,629,800 seconds

Year (365 days):

= 365 days
= 8,760 hours
= 31,536,000 seconds

Special units:
  • Millisecond: 1/1,000 second
  • Microsecond: 1/1,000,000 second
  • Nanosecond: 1/1,000,000,000 second
  • Leap year: 366 days = 31,622,400 seconds

Practical Applications

Professional Applications
  • Working time conversions
  • Project time planning
  • Hourly rate calculations
  • Shift schedule optimization
Scientific Applications
  • Experimental measurements
  • Data acquisition intervals
  • Reaction time analysis
  • Period duration calculations
Technical Applications
  • System performance analysis
  • Plan backup cycles
  • Timeout settings
  • Scheduler configuration

Mathematical Properties

Conversion Properties
  • Linearity: Proportional relationships
  • Transitivity: Multi-step conversions
  • Invertibility: Bidirectional conversion
  • Precision: Lossless conversion
Factor Relationships
  • Multiplicative: Fixed conversion factors
  • Hierarchical: Unit hierarchy
  • Mixed system: Partly decimal (×10), partly sexagesimal (×60)
  • Constancy: Immutable factors
Algorithmic Properties

Complexity:
O(1) - Constant conversion time

Accuracy:
Lossless conversion for whole numbers

Precision and Rounding

Accuracy and rounding behavior

Exact conversions:

1 hour = 60 minutes (exact)
1 day = 24 hours (exact)
✓ No rounding errors

Decimal conversions:

1 minute = 0.0166... hours
Configurable decimal places
⚠ Rounding depends on precision

Rounding strategies:
  • Mathematical rounding: 0.5 is rounded up
  • Consistent precision: All results with same accuracy
  • User-defined: Selectable decimal places (0-10)
  • Low-loss: Minimal information loss

Date and time calculators

Add time  •  Add days  •  Convert time units  •  Days between dates  •  Divide time period  •  Multiply time period  •  Percent of time period  •  Subtract days  •  Subtract time period  •  Time difference  •  Time period ratio  •  Time period to percentage  •