Date Difference Calculator
How it works
The calculator counts whole days between the two dates you choose and also shows the result as weeks and days.
Other tools
Everyday
- Percentage CalculatorFind X% of a number and more.
- Tip CalculatorTip amount, total and per-person split.
- Fuel Cost CalculatorWhat a trip costs in fuel, split any number of ways.
- Age CalculatorYour exact age in years, months and days, plus your next birthday.
- Discount CalculatorSale price from a discount, or the original price from a sale.
- Unit Price CalculatorCompare two pack sizes and see which is cheaper per unit.
- Time Duration CalculatorAdd or subtract two durations, normalized and signed.
- Time Zone ConverterConvert a time between two time zones.
- Countdown CalculatorLive countdown to any date and time.
- Group Expense SplitterSplit shared costs unevenly among named people.
- Work Hours CalculatorTotal hours worked from clock-in and clock-out times.
- Grade CalculatorWeighted final grade from assignment scores.
- Recipe Ratio ScalerScale ingredient quantities up or down for any serving size.
- Gas Mileage CalculatorFuel economy in MPG or L/100km from odometer and fuel used.
- Paint Coverage CalculatorHow much paint a room needs, from its dimensions.
- Commute Cost CalculatorMonthly commute cost by car versus public transit.
- Pet Age CalculatorA dog or cat's age in human years.
- Party Food & Drink PlannerHow much food and drink to get for a party, by guest count.
- Appliance Energy Cost CalculatorWhat running an appliance costs, from its wattage and use.
- Rent Split CalculatorSplit rent fairly among roommates by room size or evenly.
- Reading Pace CalculatorPages a day needed to finish a book by a target date.
- Shopping Cart Total CalculatorAdd up a list of items with quantities and tax.
- Days Since / Milestone CalculatorDays, weeks or months since a date, and upcoming milestones.
- Random Team GeneratorShuffle a list of names into random teams or a winner.
Finance
- EMI CalculatorLoan EMI, amortization schedule and prepayments.
- SIP CalculatorWhat a monthly investment grows to over time.
- Compound Interest CalculatorMaturity value of a one-time deposit, any compounding.
- GST / Sales Tax CalculatorAdd tax to a price or work back from a total.
- Loan Affordability CalculatorThe most you can borrow at a monthly payment you can afford.
- Simple Interest CalculatorInterest and total for a fixed rate over time.
- CAGR CalculatorCompound annual growth rate from a starting and ending value.
- Investment Doubling Time CalculatorYears to double your money at a rate, or the rate needed to double it by a target year.
- Mortgage CalculatorMonthly payment including property tax, insurance and PMI.
- Retirement Savings CalculatorWhat regular contributions grow to by retirement.
- Debt Payoff CalculatorSnowball or avalanche order to clear multiple debts.
- Savings Goal CalculatorMonthly deposit needed to reach a savings target.
- Inflation CalculatorWhat an amount from one year is worth in another.
- Break-Even Point CalculatorUnits or revenue needed to cover fixed and variable costs.
- Profit Margin CalculatorGross margin and markup from cost and selling price.
- Exchange Rate CalculatorConvert an amount using an exchange rate you supply.
- Net Worth CalculatorTotal assets minus liabilities, with a full breakdown.
- Emergency Fund CalculatorHow many months of expenses your savings would cover.
- Credit Card Minimum Payment CalculatorHow long minimum payments take, versus a fixed payment.
- Rent Affordability CalculatorRent you can afford from your income, by the 30% rule.
- Freelance Hourly Rate CalculatorHourly rate to charge from a target income and billable hours.
- Property Tax CalculatorAnnual and monthly property tax from a home value and rate.
- Auto Loan CalculatorMonthly car payment with trade-in, down payment and sales tax.
- Zakat CalculatorZakat due at 2.5% of qualifying assets above the nisab.
- Loan-to-Value (LTV) CalculatorLoan-to-value ratio from a loan amount and property value.
Health
- BMI CalculatorBody mass index and category, in metric or imperial.
- Calorie CalculatorDaily calories (BMR and TDEE) from your stats and activity.
- Pregnancy Due Date CalculatorEstimated due date and current week, from your last period.
- Body Fat Percentage CalculatorEstimate body fat percentage from tape measurements, U.S. Navy method.
- Water Intake CalculatorDaily water target in litres and glasses from body weight and exercise.
- Ideal Weight CalculatorReference body weight from four classic formulas, side by side.
- Macro CalculatorProtein, carb and fat grams from a calorie target.
- Heart Rate Zone CalculatorTraining heart rate zones from your age.
- Waist-to-Hip Ratio CalculatorWaist-to-hip ratio and health risk category.
- Sleep Cycle CalculatorBedtimes or wake times aligned to 90-minute cycles.
- One-Rep Max CalculatorEstimated one-rep max from any weight and reps.
- Body Surface Area CalculatorEstimated body surface area from height and weight.
- Blood Alcohol Content EstimatorEstimated BAC from drinks, weight, sex and time.
- Standard Drink CalculatorHow many standard drinks a beverage contains.
- Intermittent Fasting CalculatorYour eating window and next fast, from a fasting schedule.
- Ovulation CalculatorEstimated fertile window from your cycle length.
- Steps to Calories CalculatorCalories burned walking, from your step count and weight.
- Blood Pressure Category CheckerBlood pressure category from a systolic/diastolic reading.
- Caffeine Half-Life CalculatorHow much caffeine is still in your system over time.
Utilities
- Aspect Ratio CalculatorGet width or height for a ratio like 16:9.
- Password GeneratorStrong random passwords in your browser.
- Number to WordsWrite a number out in words, for cheques and forms.
- Roman Numeral ConverterNumbers to Roman numerals and back, either direction.
- Temperature ConverterCelsius, Fahrenheit and Kelvin, all at once.
- Pace & Speed ConverterPace and speed for running, plus race finish times.
- CGPA to Percentage CalculatorAn approximate percentage from a CGPA, on any scale.
- Length ConverterMillimetres to miles, and everything between, all at once.
- Weight ConverterMilligrams to stone, and everything between, all at once.
- Number Base ConverterConvert an integer between any two bases from 2 to 36.
- Data Storage ConverterBytes to KB, MB, GB, TB and back, binary or decimal.
- Volume ConverterMillilitres to gallons, and everything between, all at once.
- Statistics CalculatorMean, median, mode and standard deviation of a list.
- Random Number GeneratorRandom numbers in a range, unique or repeating.
- Dice RollerRoll any number and size of dice, with the total.
- Screen Resolution / PPI CalculatorPixel density from a screen size and resolution.
- Data Bandwidth CalculatorDownload time from a file size and connection speed.
- Paper Size ConverterDimensions for A4, Letter, Legal and other paper sizes.
- Speed, Distance & Time CalculatorSolve for speed, distance or time from the other two.
- Flooring & Tile CalculatorBoxes of flooring or tile needed for a room, with waste.
- Percentage Change CalculatorPercent increase or decrease between two values.
- Ratio & Proportion SolverSolve the missing value in a proportion, A:B = C:?
- Fraction CalculatorAdd, subtract, multiply or divide fractions, simplified.
- Golden Ratio CalculatorThe golden-ratio proportioned length for any dimension.
- Betting Odds ConverterConvert odds between fractional, decimal, American and probability.
- Pet Food Portion CalculatorDaily food amount for a dog or cat by weight and activity.
- Pressure ConverterPSI, bar, pascal and atmospheres, all at once.
- Energy Unit ConverterJoules, calories, kWh and BTU, all at once.
- Power Unit ConverterWatts, horsepower and BTU/hr, all at once.
- Angle ConverterDegrees, radians and gradians, all at once.
- Concrete CalculatorConcrete volume and bags needed for a slab.