Popular Calculators
These are the free calculators people use most on DigiToolkit. Each one is fast, accurate and works on any device — with the formula and a worked example included.
Most popular
💳Banking & Deposits
Fixed Deposit Calculator
A = P x (1 + r/n)^(n x t)
Open calculator →💼Business & Commerce
Discount Calculator
Saving = Price x discount/100; Final = Price - Saving
Open calculator →🔄Converters
Currency Converter
Converted = amount x exchange rate
Open calculator →📅Date & Time
Age Calculator
Difference between the two dates expressed in years, months and days
Open calculator →📅Date & Time
Date Difference Calculator
Count days between two dates and express in multiple units
Open calculator →📈Finance & Investment
Compound Interest Calculator
A = P x (1 + r/n)^(n x t); Interest = A - P
Open calculator →📈Finance & Investment
Simple Interest Calculator
SI = P x R x T / 100; Maturity = P + SI
Open calculator →❤️Health & Fitness
BMI Calculator
BMI = weight(kg) / height(m)^2
Open calculator →❤️Health & Fitness
Calorie Calculator
TDEE +/- calorie adjustment for the goal
Open calculator →🏦Loans & EMI
EMI Calculator
EMI = P x r x (1+r)^n / ((1+r)^n - 1), where r = monthly rate, n = months
Open calculator →🏦Loans & EMI
Loan Calculator
EMI = P x r x (1+r)^n / ((1+r)^n - 1)
Open calculator →🏦Loans & EMI
Home Loan EMI Calculator
EMI = P x r x (1+r)^n / ((1+r)^n - 1)
Open calculator →🔢Mathematics
Percentage Calculator
Result = (percent / 100) x value
Open calculator →🧾Tax & Salary
GST Calculator
Add: GST = Amount x rate/100. Remove: Net = Amount x 100/(100+rate)
Open calculator →🧾Tax & Salary
Income Tax Calculator
Tax computed using slab rates; cess = 4% of tax. New-regime FY 2024-25 slabs applied by default.
Open calculator →Featured
📈Finance & Investment
Lumpsum Calculator
FV = P x (1 + r)^t
Open calculator →📈Finance & Investment
CAGR Calculator
CAGR = (End / Begin)^(1/years) - 1
Open calculator →🧮General Calculators
Scientific Calculator
Safely evaluate the mathematical expression
Open calculator →📐Geometry & Measurement
Area Calculator
Area = length x width; Perimeter = 2 x (length + width)
Open calculator →❤️Health & Fitness
BMI Calculator
BMI = weight(kg) / height(m)^2
Open calculator →❤️Health & Fitness
TDEE Calculator
TDEE = BMR (Mifflin-St Jeor) x activity factor
Open calculator →🏦Loans & EMI
EMI Calculator
EMI = P x r x (1+r)^n / ((1+r)^n - 1), where r = monthly rate, n = months
Open calculator →🔢Mathematics
Average Calculator
Mean = sum of values / count
Open calculator →