Free Online Calculators

About this percentage calculator

Use this calculator to find a percentage of a number, compare percentage change, or calculate a discount price. It is useful for shopping, sales tax estimates, price changes, school assignments, and quick business math.

For discount calculations, enter the original price and discount rate to estimate the final price and savings. For percentage change, enter the starting and ending values to see whether the value increased or decreased.

About this BMI calculator

The BMI calculator estimates body mass index from height and weight. It supports metric and imperial units, making it easy to compare your result with common BMI categories.

BMI is a screening estimate, not a medical diagnosis. It does not measure muscle mass, body composition, pregnancy, age-specific health factors, or personal medical history.

About this mortgage calculator

This mortgage calculator estimates monthly principal and interest payments based on home price, down payment, interest rate, and a loan term in years and months. It helps compare different loan scenarios before talking to a lender.

The estimate does not include every possible housing cost, such as property tax, insurance, HOA fees, closing costs, or lender-specific fees. Use it as a planning guide, then confirm numbers with your lender.

About this age calculator

The age calculator finds exact age between a birth date and an as-of date. It can show years, months, days, total days lived, next birthday timing, and related date details.

This is useful for forms, birthdays, school records, age checks, event planning, and any situation where the exact date difference matters.

About this tip calculator

The tip calculator estimates tip amount, total bill, and cost per person. Enter the bill amount, choose a tip percentage, and set the number of people sharing the bill.

It is helpful for restaurants, delivery orders, ride services, travel expenses, and group outings where everyone wants a quick fair split.

About this date calculator

The date calculator can count the time between two dates or add time to a starting date. It is useful for deadlines, travel planning, project schedules, billing periods, and event countdowns.

Use the difference tab to compare two dates, or use the add/subtract tab when you need to find a future or past date from a known starting point.

About this compound interest calculator

This compound interest calculator estimates how savings or investments may grow over time. Enter a starting amount, monthly contribution, expected annual return, and number of years to compare long-term scenarios.

The result is an estimate, not an assured outcome. Real returns can change because of market performance, fees, taxes, inflation, and contribution timing.

About this loan payment calculator

The loan payment calculator estimates a monthly payment from loan amount, APR, and repayment term. It also shows total paid and total interest so you can compare borrowing costs.

Use it for personal loans, installment loans, debt planning, and rough payment estimates. Final loan terms may include fees, insurance, variable rates, or lender-specific rules.

About this car loan calculator

The car loan calculator estimates monthly auto payments using vehicle price, down payment, trade-in value, APR, and loan term. It helps you compare affordability before visiting a dealership.

The estimate may not include registration, insurance, taxes, dealer fees, warranties, or lender fees. Use the result as a planning number and confirm the final contract carefully.

About this salary calculator

The salary calculator converts hourly pay into weekly, monthly, and yearly income. It also includes a simple estimated tax rate field so you can compare gross pay with estimated take-home pay.

Actual take-home pay can vary because of benefits, deductions, retirement contributions, local taxes, credits, and filing status. Use this calculator for planning, not as tax advice.

About this sales tax calculator

The sales tax calculator estimates final checkout cost after discount and sales tax. Enter a pre-tax price, optional discount, and sales tax rate to see the tax amount and final price.

Sales tax rates can vary by country, state, province, city, product type, and exemption rules. For official tax obligations, check your local tax authority or receipt.

About this crypto profit calculator

This crypto profit calculator is a manual educational tool for estimating profit, loss, ROI, fees, leverage, margin, and break-even price from the numbers you enter. It does not fetch live prices or provide trading instructions.

This page is for educational calculation only. It is not financial, investment, tax, or legal advice. Crypto markets are volatile, and leveraged trading can increase losses. Tax treatment depends on your location and personal situation. Consult a qualified professional for tax or legal questions.

This calculator does not estimate liquidation price because exchanges use different maintenance margin, funding, and liquidation rules.

About this crypto DCA and average buy price calculator

This manual calculator estimates average buy price from multiple crypto entries. Add price, quantity, and optional fee for each entry, then enter a current price to estimate current value and unrealized profit or loss.

This page is for educational calculation only. It is not financial, investment, tax, or legal advice. Crypto markets are volatile. Tax treatment depends on your location and personal situation. Consult a qualified professional for tax or legal questions.