Free Online Calculator Tools
23 toolsCalculate percentages, date intervals, repayments, and savings scenarios.
- Percentage CalculatorCalculate percentages, increases, decreases
- BMI CalculatorCalculate Body Mass Index and health status
- Age CalculatorCalculate age in years, months, days, hours
- Tip CalculatorCalculate tips and split bills easily
- Scientific CalculatorCalculate powers, roots, logarithms and trigonometric functions
- Loan CalculatorCalculate loan payments, interest rates, and amortization
- Compound Interest CalculatorCalculate compound interest and investment growth
- Expense TrackerTrack and categorize daily expenses with visual charts
- Standard CalculatorBasic calculator for everyday math operations
- Liquidation CalculatorCalculate crypto leverage positions and liquidation prices
- Date CalculatorCalculate differences between dates and add/subtract days, months, years
- Aspect Ratio CalculatorCalculate and convert aspect ratios for images, video, and screens
- Electricity Cost CalculatorCalculate electricity costs for your appliances and devices
- Fuel Cost CalculatorCalculate fuel costs for trips based on distance and consumption
- GPA CalculatorCalculate your Grade Point Average from course grades and credits
- Mortgage CalculatorCalculate monthly mortgage payments, interest, and amortization schedule
- Salary CalculatorCalculate take-home pay with federal and state tax deductions
- ROI CalculatorCalculate return on investment and annualized returns
- Inflation CalculatorCalculate how inflation affects purchasing power over time
- DCA CalculatorSimulate dollar-cost averaging strategy and compare with lump sum
- Crypto Profit CalculatorCalculate crypto trading profit, loss, ROI, and fees
- Savings Goal CalculatorPlan how much to save monthly to reach your financial goal
- Retirement CalculatorProject retirement savings and required income for retirement
Calculate and compare everyday scenarios
Work with percentages, dates, loan assumptions, savings, and other numerical questions. A calculator turns your inputs into a result using a particular formula; the inputs and assumptions determine how useful that result is. Keep units, rounding, fees, and time periods consistent when comparing scenarios.
Check the assumptions behind a result
Percentage Calculator helps with proportions and changes. Loan Calculator compares repayment assumptions. Compound Interest Calculator explores growth over time using the rate and contribution settings you supply.
Common questions
Are financial calculator results an exact quote?
No. They are estimates from your inputs. Actual charges, taxes, rate changes, and lender terms can change the amount.
What is the difference between a percentage increase and percentage points?
A percentage increase is relative to the starting value; percentage points measure the direct difference between percentages. Use Percentage Calculator with the operation that matches the question.
Why does the contribution schedule affect compound-interest results?
Money added earlier can accumulate growth for longer. In Compound Interest Calculator, keep the contribution frequency and rate period consistent when comparing scenarios.
How do I calculate the time between two dates?
Date Calculator helps with date intervals. Decide whether the task should include the start or end date, because inclusive counting can differ from elapsed time.