Age Calculator
Age = Current date - Birth date, with year, month, and day breakdowns.
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Formulas
Each calculator uses the formula printed here. Open the tool to change the inputs and see the estimate.
Percentage Calculator
Percentage = (part / whole) × 100
Open calculatorBMI Calculator
BMI = weight (kg) / (height (m) × height (m))
Open calculatorEMI Calculator
EMI = P × r × (1+r)^n / ((1+r)^n - 1)
Open calculatorSIP Calculator
FV = P × [((1+r)^n - 1) / r] × (1+r)
Open calculatorGST Calculator
GST amount = base × GST rate / 100; total = base + GST amount
Open calculatorWater Intake Calculator
Daily water (liters) = weight (kg) × 0.033
Open calculatorUnit Converter
Use standard conversion factors for the selected unit pair.
Open calculatorDate Difference Calculator
Difference = End date - Start date
Open calculatorSalary Calculator
Take-home = gross salary - tax - deductions
Open calculatorCompound Interest Calculator
A = P × (1 + r/n)^(nt)
Open calculatorSimple Interest Calculator
SI = P × R × T / 100
Open calculatorDiscount Calculator
Discount = original price × rate / 100
Open calculatorHome Loan Calculator
EMI = P × r × (1+r)^n / ((1+r)^n - 1)
Open calculatorPregnancy Weeks Calculator
Pregnancy weeks ≈ days since last menstrual period ÷ 7
Open calculatorTip Calculator
Tip = bill × tip percent ÷ 100. Total = bill + tip.
Open calculatorTime Calculator
Total minutes = all hours × 60 + all minutes, then split back into hours and minutes.
Open calculatorRatio Calculator
B = value of A ÷ A × B.
Open calculatorArea Calculator
Area = length × width, in the units you type.
Open calculatorVolume Calculator
Volume = length × width × height.
Open calculatorAverage Calculator
Average = sum of the numbers entered ÷ how many numbers you entered.
Open calculatorCAGR Calculator
CAGR = (end ÷ start) ^ (1 ÷ years) − 1.
Open calculatorFraction Calculator
Divide the numerator and denominator by their greatest common divisor.
Open calculatorLCM Calculator
LCM(a, b) = a × b ÷ GCD(a, b).
Open calculatorNumerology Name Calculator
A=1 … I=9, then J=1, and the total is reduced to one digit.
Open calculatorAttendance Calculator
Attendance % = present ÷ held × 100.
Open calculatorMileage Calculator
Mileage = distance in km ÷ fuel in litres.
Open calculatorSalary Hike Calculator
Change % = (new − old) ÷ old × 100.
Open calculatorProfit Calculator
Profit = selling price − cost. Margin % = profit ÷ cost × 100.
Open calculatorSWP Calculator
Corpus ≈ withdrawal × (1 − (1 + r)^−n) ÷ r, with r the monthly rate and n the number of months.
Open calculatorBrokerage Percent Calculator
Charge = trade value × percent ÷ 100.
Open calculatorPeriod Calculator
Next date = start date + cycle length in days.
Open calculatorCalorie Calculator
BMR = 10×kg + 6.25×cm − 5×age + 5 for male, or − 161 for female.
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