25 free calculator tools Calculator tools. Free, no sign-up.
Accurate calculators for finance, math, health, and daily life.
- Most tools run in your browser
- Uploads deleted after processing
- Free, no account
About this category
About calculator tools
From working out a mortgage payment to checking a BMI or solving an equation, a good calculator saves time and removes guesswork. This collection covers financial, mathematical, health, and everyday calculations with clear, reliable results. Each one runs instantly in your browser, so you get an answer the moment you enter your numbers.
How it works
- 1Pick a toolOpen any tool from the list. There is nothing to install and no account to create.
- 2Add your file or textDrop a file, paste text or type your values. Most tools work right in your browser.
- 3Get your resultDownload or copy the result. Files sent to our server are deleted once it is ready.
The collection
All calculator tools
Search, filter or sort to find the right one. Every tool opens instantly.
25 tools, all free
Age Calculator
Calculate age online for free. Determine age from date of birth in years, months, days, hours, and minutes. No sign-up required.Open toolBMI Calculator
Calculate BMI online for free. Determine Body Mass Index using weight and height. Get healthy weight range and classification. Supports metric and imperial units. No sign-up required.Open toolBusiness Working Days Calculator
Calculate exact working business days between dates, excluding weekends and custom non-working days.Open toolCalories Calculator
Calculate your Basal Metabolic Rate (BMR) and daily maintenance calories.Open toolCompound Interest Calculator
Determine how your savings or investments will grow over time with compound interest.Open toolDate Difference
Calculate the difference between two dates in years, months, weeks, days, and other units.Open tool
Distance & Area Calculator
Measure the distance between places and the area of any plot, field or shape on a map. Free, with kilometres, miles, acres and hectares.Open toolEMI Calculator
Calculate Equated Monthly Installments (EMI) for home, car, or personal loans.Open toolFD, RD & PPF Savings Calculator
Calculate compound interest maturity returns for Fixed Deposits (FD), Recurring Deposits (RD), PPF, and Gratuity payouts.Open toolGPA Calculator
Easily calculate your Grade Point Average (GPA) for high school or college.Open toolGST Calculator
Calculate Goods and Services Tax (GST) easily. Add or remove GST from your base amount.Open toolInflation Calculator
Calculate how inflation affects purchasing power over a period of time.Open toolLoan Calculator
Estimate monthly payments, total interest, and total cost for a fixed-rate loan.Open toolMortgage Calculator
Calculate your monthly home mortgage payments including interest.Open toolOvulation Calculator
Estimate your most fertile days and ovulation date.Open toolPercentage Calculator
Calculate percentages online for free. Find percentage of a number, percentage increase/decrease, and percentage difference. Solve percentage problems instantly. No sign-up required.Open toolPregnancy Calculator
Calculate your estimated due date (EDD) and track trimester milestones.Open toolROI, CAGR & Profit Margin Calculator
Calculate CAGR, Return on Investment (ROI), Break-Even units, Gross Profit Margins, and Discount/Tax totals.Open toolSalary Calculator
Calculate your net take-home pay based on your gross salary and deductions.Open toolSIP Calculator
Estimate the future value of your Systematic Investment Plan (SIP) investments.Open toolTax Calculator
Estimate your income tax liability based on brackets or flat rates.Open tool
Time Zone Converter
Convert a time between cities and time zones, see who is in working hours, and copy the times for a meeting invite. Daylight saving is handled automatically.Open toolTip Calculator
Calculate tips online for free. Determine tip amount, total bill, and per-person split. Supports custom tip percentages and group splitting. No sign-up required.Open toolUnit Converter
Convert length, weight, temperature, volume, area, speed, time, digital storage, and more.Open toolVAT Calculator
Quickly calculate Value Added Tax (VAT) for your products and services.Open tool
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