Utility Tools
Age Calculator – Exact DOB with Legal Eligibility & Birthday Countdown
Calculate your exact age in years, months, and days with birthday countdown and life stage based on your date of birth.
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Age / Date Difference Calculator
Calculate age gap or date difference in years, months, days, and total time.
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Free QR Code Generator with Logo, Color Customization & PNG Download
Generate free QR codes for URLs, text, links, payments, and more with logo and Color Customization . Download high-quality PNG QR codes instantly.
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Percentage Calculator – Find Percent, Percent Change, Increase or Decrease
Calculate X% of Y, percent change, and more.
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Competitive Exam Score Simulator
Calculate your real exam score with negative marking and explore strategies to maximize performance.
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Work & Break Time Calculator – Calculate Break Time and Actual Work Time
Calculate total break time and actual work time based on shift schedule.
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Time Duration Calculator Between Two Dates and Times
Calculate the exact duration between two dates and times in days, hours, and minutes. Supports same-day and multi-day intervals.
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Focus Timer & Pomodoro Clock
Track focus sessions, deep work time, and Pomodoro cycles with custom durations.
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Simple Productivity Calculator
Calculate productivity using the classic Output ÷ Input formula.
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Focus Efficiency Calculator
Calculate focus efficiency using focused time, total session time, and distractions.
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Personal Efficiency Index Calculator
Measure productivity by comparing planned tasks, completed tasks, and time used.
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Deadline Buffer Estimator
Estimate realistic project deadlines by adding smart buffers for complexity and human underestimation.
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Binary Choice Regret Simulator
Compare two life or financial options using regret-based psychology questions to see which choice you may regret missing more.
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Electricity Bill Calculator
Estimate electricity bills using units, tariff, fixed charges, and taxes.
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Tip Calculator
Calculate tip amount, total bill, and per-person share instantly.
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Construction Cost Calculator
Estimate the total construction cost based on area and cost per sq ft.
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Construction Time Calculator
Estimate total construction time based on area and daily construction speed.
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Painting Cost Calculator
Estimate total painting cost based on area and cost per sq ft.
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Flooring Cost Calculator
Estimate flooring cost based on area and material price per sq ft.
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Tile Calculator
Calculate tiles needed, tile boxes, coverage area, and total cost with wastage factor.
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Brick Wall Construction Calculator
Estimate the number of bricks and total construction cost for brick walls.
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Maintenance Cost Calculator
Estimate monthly and yearly society maintenance charges based on area and rates.
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Fuel Cost Trip Calculator
Estimate total fuel cost using distance, mileage, and fuel price. Perfect for travel planning and road trips.
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Fuel Efficiency Calculator
Calculate real vehicle mileage using distance travelled and fuel consumed. Works for cars, bikes, and all fuel types.
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EV kWh Consumption Calculator
Calculate EV electricity usage and total charging cost using distance, km per kWh efficiency, and electricity rate.
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Height Unit Converter
Convert height between cm, feet, inches, and meters instantly.
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Weight Unit Converter
Convert weight between kg, grams, pounds, ounces and stones.
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Temperature Converter
Convert temperature between Celsius, Fahrenheit and Kelvin.
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Speed Converter
Convert speed between km/h, mph, and m/s instantly.
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Area Converter
Convert area between sq ft, sq m, sq yd, and acres.
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Price Per Square Foot Calculator
Calculate cost per sq ft, sq m, and sq yard for real estate.
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Land Area Converter
Convert Bigha, Acre, Sq Ft, Sq M, and Hectare easily.
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Unit Price Calculator
Calculate cost per unit by dividing total price by quantity. Perfect for comparing products and finding the best value.
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Sensitivity & Specificity Calculator
Compute sensitivity, specificity, PPV, NPV, and accuracy for diagnostic test evaluation.
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Margin of Error Calculator
Compute statistical margin of error instantly using z-score, standard deviation, and sample size.
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Sample Size Calculator (Power Analysis)
Estimate the minimum sample size required using significance level, power, and effect size.
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Cronbach's Alpha Calculator
Check internal consistency reliability using Cronbach's alpha from items and inter-item correlations.
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Ball Spin Probability Simulator
Watch probability play out visually. Enter win chance + number of spins and see real outcomes vs expected odds.
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Online Dice Roller & Probability Simulator
Virtual dice roller to roll any dice (d6, d20, d100…) and observe how randomness produces real frequency distributions over time. Instantly roll a virtual dice online for games, decisions, or probability experiments.
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Million, Billion & Trillion Counting Time Simulator
Estimate how long it would take to count large numbers based on digit length and counting speed with this interactive educational simulator.
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Random Wheel Spin Simulator
Spin a customizable random wheel to make decisions, run fair selections, or explore probability in action. Add your own options and watch the wheel choose randomly while tracking real statistics.
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Strategy Simulator (Prisoner's Dilemma)
An interactive education simulator based on the Prisoner’s Dilemma. Compare AI strategies, run repeated game experiments, and observe how cooperation and competition evolve over time.
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The Vanishing Market Decision Simulator
An interactive educational simulator that teaches career and financial decision-making through multi-round strategic choices.
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