Productivity Suite
Calculators and productivity tools. 12 free tools available.
Area Calculator
Calculate area of various shapes.
BMI Calculator
Calculate your Body Mass Index.
Body Fat Calculator
Estimate your body fat percentage.
Calorie Calculator
Calculate your daily calorie needs, BMR, and macros.
Calculator
Basic and scientific calculator.
Discount Calculator
Calculate discounts and savings.
Height Converter
Convert between height units.
Loan EMI Calculator
Calculate monthly loan payments.
Percentage Calculator
Calculate percentages easily.
Savings Calculator
Plan and calculate your savings.
Volume Calculator
Calculate volume of 3D shapes.
Weight Converter
Convert between weight units.
Free Online Calculators and Unit Converters
Whether you are calculating your body mass index at home, figuring out monthly loan payments, converting units for a recipe or measuring the area of a room for new flooring, having the right calculator at your fingertips makes all the difference. Our collection of free online calculators and unit converters covers health metrics, financial planning, mathematics and unit conversions, all accessible from any device with a web browser.
Every calculator on this page produces instant results as you type, displays visual gauges and breakdowns to help you understand the numbers, and saves your calculation history in your browser so you can track changes over time. No downloads, no registration and no data ever leaving your device.
Need to calculate your BMI and understand what it means?
Open BMI Calculator →Health and Fitness Calculators
Monitoring health metrics is essential for maintaining a healthy lifestyle. These calculators use medically recognized formulas to help you understand where you stand:
- BMI Calculator – Calculate your Body Mass Index using metric or imperial units. See your result on a visual gauge showing underweight, normal, overweight and obese ranges. The tool explains your BMI category and saves your history so you can track changes over time.
- Body Fat Calculator – Estimate your body fat percentage using three different methods: US Navy formula, BMI-based estimation and skinfold measurement. Supports both metric and imperial inputs. Includes a body composition bar showing fat versus lean mass and a gauge for visual interpretation.
Financial Calculators
Financial planning requires accurate calculations. Whether you are comparing loan offers, calculating how much your savings will grow or figuring out how much you save with a discount, these tools provide the numbers you need to make informed decisions:
- Loan EMI Calculator – Calculate your Equated Monthly Installment for any loan amount, interest rate and tenure. Supports five currencies with proper national formatting. View a complete amortization schedule showing principal and interest breakdown for each payment. See the total interest paid over the life of the loan.
- Savings Calculator – Calculate compound interest on your savings with configurable deposit amounts, interest rates, time periods and compounding frequencies. See a year-by-year growth schedule and a visual bar showing how your money grows over time. Supports five currencies.
- Discount Calculator – Calculate the final price after single or stacked discounts with optional tax. Supports multiple currencies with proper national number formatting and amount in words. See a savings bar and formula breakdown for transparent calculations.
- Percentage Calculator – Three calculation modes: find X percent of Y, find what percentage X is of Y, and calculate percentage change between two values. Visual bar display and formula breakdown for each calculation.
Planning a loan? See your exact monthly payment and interest breakdown.
Open Loan EMI Calculator →Math and Geometry Calculators
Geometry calculations are essential for construction, interior design, engineering and academic work. Manual calculations with area and volume formulas are error-prone and time-consuming. These tools automate the math:
- Area Calculator – Calculate the area of 11 different shapes including circle, rectangle, triangle, trapezoid, ellipse, parallelogram, rhombus, sector, regular polygon, pentagon and hexagon. Includes a canvas preview of each shape, formula display and unit conversions between square meters, feet, inches, centimeters, yards, kilometers and miles.
- Volume Calculator – Calculate the volume of 10 three-dimensional shapes including cube, rectangular prism, sphere, cylinder, cone, pyramid, hemisphere, ellipsoid, torus and triangular prism. Displays formulas, surface area calculations and unit conversions across five measurement systems.
- Scientific Calculator – A full-featured calculator with basic arithmetic and scientific functions including trigonometry, logarithms, powers, roots, factorials, constants and memory operations. Supports keyboard input, degree and radian modes and maintains a full calculation history.
Unit Conversion Tools
Working with different measurement systems is a daily reality in a global world. Recipes use grams while grocery stores show ounces. Building plans might be in meters while your tape measure shows feet and inches. These converters handle all common unit transformations:
- Weight & Height Converter – Dual-mode converter with separate tabs for weight and height. Converts weight between kilograms, grams, pounds, ounces, stones, milligrams and metric tons. Converts height between centimeters, meters, feet and inches, inches and millimeters. Quick preset chips for common values and a swap button for reversing conversions.
- Height Converter – Focused height conversion between centimeters, meters, feet and inches, inches and millimeters. Includes preset chips for common heights and one-click copy to clipboard for each format.
Why Our Calculators Are Different
Visual Gauges
Results are shown on colored gauges and progress bars, making it easy to understand where your value falls in the range.
History Tracking
Every calculator saves your previous calculations in your browser so you can track changes and compare results over time.
Multi-Currency
Financial calculators support multiple currencies with proper national number formatting and amounts in words.
Formula Display
See the exact formula used for each calculation so you understand the math behind the results.
Works on Mobile
Fully responsive design adapts to any screen size. Calculate on your phone, tablet or desktop.
Real-Time Results
Results update instantly as you type or adjust inputs. No need to press a calculate button.
Frequently Asked Calculator Questions
BMI (Body Mass Index) is calculated by dividing your weight in kilograms by the square of your height in meters: BMI = weight / (height x height). A BMI of 18.5-24.9 is considered normal weight, below 18.5 is underweight, 25-29.9 is overweight and 30 or above is obese. Our BMI Calculator handles the conversion from imperial units automatically if you prefer to enter weight in pounds and height in feet and inches.
EMI stands for Equated Monthly Installment. It is the fixed payment amount a borrower makes to a lender each month. EMI is calculated using the formula: EMI = P x r x (1+r)^n / ((1+r)^n - 1), where P is the principal loan amount, r is the monthly interest rate and n is the number of monthly installments. Our Loan EMI Calculator also generates a full amortization schedule showing how each payment is split between principal and interest.
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. The formula is A = P(1 + r/n)^(nt), where A is the final amount, P is the principal, r is the annual interest rate, n is the number of times interest compounds per year and t is the number of years. Our Savings Calculator lets you choose between annual, semi-annual, quarterly and monthly compounding frequencies and shows a year-by-year growth schedule.
The Area Calculator supports 11 standard geometric shapes. For irregular shapes, you can often approximate by breaking the shape into simpler components (rectangles, triangles, circles), calculating each separately and adding them together. The tool's unit conversion feature makes it easy to work in whatever measurement system you prefer.
Your calculation history is saved in your browser's localStorage, which means it stays on your device and is never sent to any server. You can view, compare and export your history from each calculator. Clearing your browser data will remove the saved history. No account is needed to use the history feature.
From health metrics to financial planning to geometry, our calculators give you accurate results with clear visual feedback. Bookmark this page for quick access whenever you need to crunch numbers.