All Calculators
Find a tool by name or choose a category. Each tool explains its method and assumptions.
Popular Calculators
Mortgage Calculator
Estimate a fixed-rate mortgage, including optional ownership costs.
EMI Calculator
Calculate equal monthly installments over a loan term.
Loan Calculator
Estimate scheduled payments at your chosen payment frequency.
Car Loan Calculator
Include a down payment, trade-in, sales tax and fees in an auto-loan estimate.
Percentage Calculator
Find a percentage of a number.
Age Calculator
Find calendar age on a target date.
Word Counter
Count words and inspect text length as you type.
Reading Time Calculator
Estimate reading time for a passage at your chosen speed.
All Calculators
40 calculators
Mortgage Calculator
Estimate a fixed-rate mortgage, including optional ownership costs.
EMI Calculator
Calculate equal monthly installments over a loan term.
Loan Calculator
Estimate scheduled payments at your chosen payment frequency.
Car Loan Calculator
Include a down payment, trade-in, sales tax and fees in an auto-loan estimate.
Compound Interest Calculator
Project compound growth with regular contributions.
Simple Interest Calculator
Estimate interest that does not compound.
Savings Calculator
Estimate a savings balance with monthly deposits.
Investment Return Calculator
Compare investment proceeds with the total amount invested.
Loan Payment Calculator
Calculate the payment needed to repay a fixed-rate loan.
Debt Payoff Calculator
Estimate how long a fixed monthly payment takes to clear debt.
Percentage Calculator
Find a percentage of a number.
Percentage Increase Calculator
Measure growth relative to an original value.
Percentage Decrease Calculator
Measure a reduction relative to an original value.
Percentage Difference Calculator
Compare two nonnegative values without choosing a baseline.
Reverse Percentage Calculator
Recover the whole when a known amount represents a percentage.
Discount Calculator
Calculate savings and the price after a discount.
Profit Margin Calculator
Find gross profit as a share of revenue.
Markup Calculator
Measure profit relative to cost.
Sales Tax Calculator
Add a sales-tax rate to a pre-tax amount.
Commission Calculator
Estimate commission using a flat percentage rate.
Age Calculator
Find calendar age on a target date.
Date Difference Calculator
Measure a span in calendar years, months and days.
Days Between Dates Calculator
Count elapsed calendar days between two dates.
Business Days Calculator
Count working days with optional weekend exclusion.
Time Duration Calculator
Measure the interval between two clock times.
Hours Calculator
Convert clock-time intervals to decimal hours and minutes.
Work Hours Calculator
Calculate working time after an unpaid break.
GPA Calculator
Calculate a credit-weighted grade-point average.
Grade Calculator
Calculate a weighted current grade across assignments.
Average Calculator
Find the arithmetic mean of a list of numbers.
Weighted Average Calculator
Calculate an average when observations have different importance.
Word Counter
Count words and inspect text length as you type.
Character Counter
Count characters with and without whitespace.
Reading Time Calculator
Estimate reading time for a passage at your chosen speed.
Sentence Counter
Estimate the number of sentences in text.
Paragraph Counter
Count text blocks separated by blank lines.
Tip Calculator
Calculate a tip and a per-person total.
Split Bill Calculator
Split a shared bill equally, including an optional tip.
Fuel Cost Calculator
Estimate fuel use and trip cost in compatible units.
Electricity Cost Calculator
Estimate energy consumption and electricity cost.