Free Online Calculators

Calculate percentages, percent-of values, and percentage increase or decrease instantly in your browser.

Calculate exact age in years, months, and days, plus total days lived and next birthday timing.

Calculate GST inclusive and exclusive amounts locally with instant tax, subtotal, and total breakdowns.

Calculate monthly loan EMI, total interest, and total payment locally for home, auto, and personal loans.

Estimate SIP invested amount, expected returns, and total value locally from monthly investment, annual return, and duration.

Calculate compound growth, total contributions, total interest, and a yearly balance breakdown with optional monthly additions.

Calculate discount amount, savings, price after discount, optional tax, and final price instantly in your browser.

Calculate body mass index from height and weight locally with category feedback and general health guidance.

Estimate monthly loan payments, total interest, and total repayment locally from amount, rate, and duration.

Calculate revenue, profit, profit margin, and markup from cost price and selling price instantly in your browser.

Calculate net profit, return on investment percentage, and optional annualized ROI locally from investment values.

Convert USD, EUR, GBP, INR, AUD, and CAD using exchange rates you enter manually, with currency swapping and copy-ready results.

Calculate percentage increase and the difference amount between an original value and a new value instantly.

Calculate percentage decrease and the difference amount between an original value and a new value instantly.

Calculate break-even units and revenue from fixed costs, variable cost per unit, and selling price per unit.

Estimate when current savings, monthly contributions, and optional interest can reach a target savings amount.

Simplify width and height into an aspect ratio and calculate matching resize dimensions in either direction.

Calculate compound annual growth rate, total growth, and growth multiple from beginning value, ending value, and years.

Estimate future cost, purchasing power, and cumulative price change using an amount, annual inflation rate, and time period.

Estimate taxable income, tax before credits, final tax, effective rate, and after-tax income using your own assumptions.

Estimate monthly mortgage payments, principal, total interest, and lifetime cost with optional property tax and insurance.

Calculate profit or loss amount, percentage based on cost, and margin based on selling price.