Calculator Tools
calculator
Average calculator, BMI calculator, GPA calculator, percentage calculator, and simple scientific calculator. All tools run in your browser—no signup required.
Average Calculator
Calculate mean, median, mode, and range from your data. Enter numbers separated by commas or spaces for statistical analysis.
Open Average Calculator →BMI Calculator
Calculate your Body Mass Index with metric or US units. Get health category and recommendations instantly.
Open BMI Calculator →Simple Calculator
Basic and scientific calculator with memory, square root, percentage, and more. Keyboard support included.
Open Simple Calculator →GPA Calculator
Calculate semester or cumulative GPA. Support for 4.0, 4.3, 4.5, and 5.0 grading scales with credit hours.
Open GPA Calculator →Percentage Calculator
Calculate percentages, percentage change, and more. Perfect for discounts, growth rates, and conversions.
Open Percentage Calculator →1. How to Use
- Choose a calculator from the grid above: Average, BMI, GPA, Percentage, or Simple Calculator.
- Average Calculator: Enter numbers separated by commas or spaces, then click Calculate for mean, median, mode, and range.
- BMI Calculator: Enter height and weight in metric (cm/kg) or US (ft/in, lbs). Switch units with the toggle button.
- Simple Calculator: Use on-screen buttons or keyboard for basic and scientific operations including memory functions.
- GPA Calculator: Add courses with grades and credits, select grading scale, then click Calculate GPA.
- Percentage Calculator: Use Basic tab for X% of a number, or Percentage Change tab for increase/decrease between two values.
2. How It Works
All calculators run in your browser. No data is sent to any server. Your input and results stay on your device.
Average Calculator parses your input, validates numbers, and computes mean (average), median (middle value), mode (most frequent), and range.
BMI Calculator uses the standard formula: weight ÷ height². Metric uses kg/m²; US units use (lbs × 703) ÷ height(in)².
GPA Calculator converts letter grades to points based on your selected scale, multiplies by credits, and divides by total credits.
Percentage Calculator: Basic = (percentage × number) ÷ 100; Change = ((new − old) ÷ old) × 100.
3. About Calculator Tools
Free online calculators for everyday math. No signup required. Works on desktop and mobile.
Designed for students, professionals, and anyone who needs quick, accurate calculations.
4. Advantages
- Private: All calculations run locally in your browser.
- No signup: Use immediately without creating an account.
- Responsive: Works on phones, tablets, and desktops.
- Accurate: Uses standard formulas and handles edge cases.
5. Real-World Use Cases
- Academic: Grade analysis, GPA tracking, statistical assignments.
- Health: BMI monitoring, fitness goals, body composition tracking.
- Finance: Discounts, tax, percentage change, ROI calculations.
- Daily: Recipe scaling, tips, budget planning, quick math.