Utility Tools
FMS Free Age Calculator with Birthday Countdown and Life Stage
Calculate your exact age in years, months, and days with birthday countdown and life stage based on your date of birth.
Click →
Age / Date Difference Calculator
Calculate age gap or date difference in years, months, days, and total time.
Click →
FMS Free QR Code Generator
Generate free QR codes for URLs, text, links, payments, and more with logo and Color Customization . Download high-quality PNG QR codes instantly.
Click →
Percentage Calculator – Find Percent, Percent Change, Increase or Decrease
Calculate X% of Y, percent change, and more.
Click →
Competitive Exam Score Simulator
Calculate your real exam score with negative marking and explore strategies to maximize performance.
Click →
Work & Break Time Calculator – Calculate Break Time and Actual Work Time
Calculate total break time and actual work time based on shift schedule.
Click →
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.
Click →
Focus Timer & Pomodoro Clock
Track focus sessions, deep work time, and Pomodoro cycles with custom durations.
Click →
Focus Efficiency Calculator
Calculate focus efficiency using focused time, total session time, and distractions.
Click →
Personal Efficiency Index Calculator
Measure productivity by comparing planned tasks, completed tasks, and time used.
Click →
Deadline Buffer Estimator
Estimate realistic project deadlines by adding smart buffers for complexity and human underestimation.
Click →
Binary Choice Regret Simulator
Compare two life or financial options using regret-based psychology questions to see which choice you may regret missing more.
Click →
Tip Calculator
Calculate tip amount, total bill, and per-person share instantly.
Click →
Construction Time Calculator
Estimate how long your construction project will take based on the area and daily construction speed.
Click →
Fuel Cost Trip Calculator
Estimate total fuel cost using distance, mileage, and fuel price. Perfect for travel planning and road trips.
Click →
EV kWh Consumption Calculator
Calculate EV electricity usage and total charging cost using distance, km/miles per kWh efficiency, and electricity rate.
Click →
Sensitivity & Specificity Calculator
Compute sensitivity, specificity, PPV, NPV, and accuracy for diagnostic test evaluation.
Click →
Margin of Error Calculator
Compute statistical margin of error instantly using z-score, standard deviation, and sample size.
Click →
Ball Spin Probability Simulator
Watch probability play out visually. Enter win chance + number of spins and see real outcomes vs expected odds.
Click →
FMS Online Dice Roller & Fairness Experiment
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.
Click →
FMS Amount Counting Time Simulator
Estimate how long it would take to count all numbers of an amount in thousand, million, billion or trillion at your chosen speed.
Click →
Typing Time Simulator – How Long to Type a Book, Essay or Blog
Estimate how long it takes to type or write content based on your typing speed (WPM) and daily writing hours. Calculate time for essays or books.
Click →
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.
Click →
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.
Click →