Mortgage CalculatorLoan CalculatorAuto Loan CalculatorCompound Interest CalculatorSimple Interest CalculatorSavings CalculatorRetirement CalculatorROI CalculatorCAGR CalculatorPresent Value CalculatorFuture Value CalculatorAnnuity CalculatorAPR CalculatorCredit Card Payoff CalculatorDebt-to-Income Ratio CalculatorIncome Tax Calculator (US Federal)Salary to Hourly Wage CalculatorTip CalculatorDiscount CalculatorSales Tax CalculatorProfit Margin CalculatorMarkup CalculatorBreak-Even CalculatorInflation CalculatorSavings Goal CalculatorExchange Rate CalculatorPercentage CalculatorPercentage Change CalculatorFraction CalculatorAverage CalculatorMean, Median & Mode CalculatorStandard Deviation CalculatorRatio CalculatorProportion CalculatorExponent CalculatorLogarithm CalculatorSquare Root CalculatorFactorial CalculatorGCD & LCM CalculatorPythagorean Theorem CalculatorQuadratic Equation CalculatorSlope CalculatorArea CalculatorPerimeter CalculatorVolume CalculatorCircle CalculatorTriangle CalculatorRandom Number Range AnalyzerScientific Notation CalculatorRounding CalculatorBMI CalculatorBMR CalculatorTDEE CalculatorCalorie CalculatorBody Fat CalculatorIdeal Weight CalculatorMacro CalculatorProtein CalculatorWater Intake CalculatorOvulation CalculatorPregnancy Due Date CalculatorConception CalculatorPeriod CalculatorPace CalculatorHeart Rate Zones CalculatorVO2 Max CalculatorOne Rep Max CalculatorSleep CalculatorBlood Alcohol Calculator (BAC)Lean Body Mass CalculatorCalories Burned CalculatorPregnancy Weight Gain CalculatorAge CalculatorDate Duration CalculatorDays Between Dates CalculatorAdd Days to Date CalculatorBusiness Days CalculatorWork Hours CalculatorTime Duration CalculatorTime Zone ConverterWeek Number CalculatorDay of Week CalculatorLeap Year CalculatorUnix Timestamp ConverterTime Add / Subtract CalculatorDays Until CalculatorZodiac Sign CalculatorChinese Zodiac CalculatorRetirement Date CalculatorQuarter CalculatorLength ConverterWeight ConverterTemperature ConverterVolume ConverterArea ConverterSpeed ConverterTime ConverterData Storage ConverterPressure ConverterEnergy ConverterPower ConverterForce ConverterTorque ConverterAngle ConverterFuel Consumption ConverterCooking ConverterShoe Size ConverterDensity ConverterFrequency ConverterHeight ConverterFlow Rate ConverterNumber to Words ConverterRoman Numeral ConverterBeaufort Scale ConverterScreen Size CalculatorDecibel ConverterConcrete CalculatorTile CalculatorPaint CalculatorFlooring CalculatorDrywall CalculatorBrick CalculatorGravel CalculatorMulch CalculatorDeck CalculatorFence CalculatorRoof Pitch CalculatorRoofing Material CalculatorStairs CalculatorSquare Footage CalculatorCubic Yard CalculatorBoard Feet CalculatorInsulation CalculatorWallpaper CalculatorOhm's Law CalculatorParallel Resistor CalculatorVelocity CalculatorAcceleration CalculatorKinetic Energy CalculatorPotential Energy CalculatorForce CalculatorMomentum CalculatorFriction CalculatorProjectile Range CalculatorPendulum CalculatorWavelength CalculatorpH CalculatorMolarity CalculatorDilution CalculatorIdeal Gas CalculatorBoyle's Law CalculatorHalf-Life CalculatorGPA CalculatorGrade CalculatorFinal Grade CalculatorWeighted Grade CalculatorDog Age CalculatorCat Age CalculatorElectricity Cost CalculatorFuel Cost CalculatorSplit Bill CalculatorUnit Price CalculatorReading Time CalculatorSubnet CalculatorDownload Time CalculatorProbability CalculatorRent Affordability CalculatorSolar Payback CalculatorHousehold Budget CalculatorEmergency Fund Calculator

Time Duration Calculator

Elapsed time between two date-times in hours, minutes and days.

By CalcHub Editorial · Last reviewed

Quick answer

  • Formula: Duration = end date-time − start date-time, reported in total minutes, total hours and a days/hours/minutes split
  • Worked example — Total hours: 51.50 (full example below).

Time Duration Calculator

Worked example result
Total hours51.50
Total minutes3,090
Duration breakdown2 days, 3 hours, 30 minutes

From 9:00 AM on January 10 to 12:30 PM on January 12, 2026 is 51.5 hours — 3,090 minutes, or 2 days, 3 hours and 30 minutes.

Diagram: how the Time Duration Calculator works — you enter Start year, Start month (1–12), Start day, Start hour (0–23), Start minute, End year, End month (1–12), End day, End hour (0–23), End minute; it applies the formula Duration = end date-time − start date-time, reported in total minut…; and the worked example gives Total hours: 51.
How the Time Duration Calculator works — the inputs, the formula, and a worked example (Total hours: 51.50).

Measure the exact elapsed time between a start date-and-time and an end date-and-time: total hours, total minutes, and a readable days/hours/minutes breakdown.

Handy for flight and travel spans, project elapsed time, equipment run time and billing periods that cross midnight or span several days.

The formula

Duration = end date-time − start date-time, reported in total minutes, total hours and a days/hours/minutes split

Worked example

From 9:00 AM on January 10 to 12:30 PM on January 12, 2026 is 51.5 hours — 3,090 minutes, or 2 days, 3 hours and 30 minutes.

Worked example for the Time Duration Calculator: with Start year 2026, Start month (1–12) 1, Start day 10, the result is Total hours: 51.50; Total minutes: 3,090.
The worked example, with the example values entered and the results they give.

The example is pre-loaded in the result panel — press Calculate with your own numbers to replace it.

Frequently asked questions

Does it handle durations under a day?

Yes — the days figure is simply 0 and the totals show the exact hours and minutes between the two times.

Are time zones involved?

No. Both date-times are treated as readings on the same clock. To compare times in different zones, convert one with the Time Zone Converter first.

Category: Date & Time calculators

Sources & methodology

This calculator applies the formula shown on this page exactly as written, using the standard definitions for its inputs. Results are computed from the values you enter — no data is stored — and are rounded only for display.

Content last reviewed by CalcHub Editorial.

Embed this calculator on your site

Free to use with attribution — paste the snippet below and the calculator appears on your page, with a link back to CalcHub.

<iframe src="https://calc-hub-63e.pages.dev/embed/time-duration-calculator" width="100%" height="640" style="border:1px solid #d9e2ea;border-radius:12px" loading="lazy" title="Time Duration Calculator — CalcHub"></iframe>

Open the embed version →

Work Hours Calculator — how-it-works diagram

Work Hours Calculator

Daily and weekly hours worked and pay, breaks included.

Date & Time →
Time Add / Subtract Calculator — how-it-works diagram

Time Add / Subtract Calculator

Add or subtract hours, minutes and seconds from a time of day.

Date & Time →
Date Duration Calculator — how-it-works diagram

Date Duration Calculator

The length of a period as years, months and days, plus total days.

Date & Time →
Time Zone Converter — how-it-works diagram

Time Zone Converter

Convert a date and time between world time zones, DST aware.

Date & Time →