Every tool you need to calculate & convert, in one place
100% free, browser-native client utilities with high precision analytics. Audit gross salary income slabs, estimate physiological BMR parameters, organize EMIs, or convert measurements instantly with complete offline isolation.
Finance & Tax Tools
(10 Tools)GST Calculator India
Calculate standard Goods and Services Tax (GST) for Indian business transactions across major tax slabs (5%, 12%, 18%, 28%) with options to add or remove GST from the base amount.
Reverse GST Calculator
Extract the authentic pre-tax base cost and exact cumulative GST from any standard tax-inclusive price point instantly.
Compound Interest Calculator
Model long-term savings projections under standard monthly compound compounding, with support for monthly contribution stacking.
Freelance Invoice Tax
Determine your net freelance revenue after accounting for customizable regional withholding tax subtractions.
Interest Comparison Calculator
Compare simple interest and compound interest side-by-side using identical principal and timeline parameters.
Salary Hike %, India
Calculate the exact percentage increment and absolute monthly variance after a salary revision.
Discounts Calculator
Apply dual-stacked discount percentages to get accurate final prices and total savings.
Crypto Profit & Loss
Model cryptocurrency trading profits or losses, factoring in transaction fees during buy and sell actions.
Hourly Wage to Salary
Convert hourly wages into equivalents across weekly, monthly, and annual intervals based on standard work schedules.
SIP Delayed Cost
Calculate what procrastinating on strategic Mutual Fund structured Systematic Investment Plans (SIP) actually costs your ultimate nest egg.
Health & Vitality Tools
(10 Tools)LMP Pregnancy Due Date
Determine Estimated Due Date (EDD) based on Naegele's rule from the first day of your last menstrual cycle.
Pregnancy Conception Date
Work backward from any estimated or ultrasound-confirmed Due Date to determine the dynamic conception window.
IVF Due Date Calculator
Calculate your estimated pregnancy due date based on IVF embryology transfer milestones (3-day vs. 5-day embryo transfer).
Ovulation Window Predictor
Enter standard cycle histories to model peak biological fertility zones and prepare for family planning.
Period Cycle Predictor
Generate 6-month predictions for your upcoming period cycles to help you plan with confidence.
Body Mass Index (BMI)
Input height and weight variables to immediately calculate clinical Body Mass Index (BMI), identify weight groups, and discover target weight ranges.
Basal Metabolic Rate (BMR)
Calculate your body's base daily energy needs in calories using the standard Harris-Benedict formulas.
Macro Split & Diet Ratios
Split your target daily calories into optimal protein, carbohydrate, and fat gram ratios based on your fitness goals.
Water Intake Target
Determine your recommended daily water target based on body weight guidelines and activity levels.
BAC Alcohol Tracker
Estimate blood alcohol saturation levels and metabolic sobriety timelines using the standard clinical Widmark Equation.
Time & Countdown Utilities
(9 Tools)Pomodoro Timer
Boost your productivity with our custom focus tracker, which alternates work intervals with strategic recovery breaks.
Online Stopwatch Laps
Track precise millisecond time intervals and record clean lap times in real-time.
Exam Countdown Timer
A precise deadline tracker to help you stay on schedule for your target exams.
Age & Birthdate Metrics
Calculate your exact age down to the minute, showing your lifetime in years, months, weeks, and days.
Days Between Two Dates
Calculate the exact number of days between any two selected dates.
TimeZone Zone Slider
Convert times across major time zones (EST, GMT, IST, JST) instantly.
Military 24h Converter
Convert standard AM/PM times into military 2400-hour system numbers.
Days Until Event Date
Estimate the exact number of days remaining until your next major event or personal milestone.
Working Days (Net)
Calculate standard business working days between two dates, with option to exclude custom public holidays.
Math & Scientific Utilities
(8 Tools)CGPA to Percentage, India
Convert university CGPA scales to equivalent percentile scores using standard regional formulas.
GPA Semester Calculator
Calculate your semester GPA by entering course grades and credit weights into an interactive table.
Percentage Increase/Decrease
Calculate absolute and percentage differences between any two numbers.
Fraction to Decimal Simplify
Convert mathematical fractions to decimals and simplify them to the lowest common denominator.
Quadratic Equation Solver
Solve quadratic structures using coefficients (a, b, c) and receive step-by-step real or complex roots.
Matrix Determinant
Calculate determinants for 2x2 and 3x3 matrices instantly.
Standard Deviation
Paste lists of comma-separated values to automatically calculate means, variance, and standard deviations.
Scientific Notation Converter
Format large or small fractional numbers into standard scientific representation.
Metric Conversion Tools
(8 Tools)Binary to Decimal Converter
Convert numbers between base-2 and base-10 systems, complete with step-by-step math explanations.
KG to LBS Weight Converter
Two-way weight converter that translates values between kilograms and pounds, complete with a reference table.
Inches to CM Converter
Convert lengths between inches and centimeters instantly.
Feet to Meters Converter
Convert lengths between feet and meters instantly.
Celsius to Fahrenheit Temp
Convert temperatures between Celsius and Fahrenheit instantly.
Mbps to GB Download Timer
Calculate expected file download times based on network speed and file size.
Gas Mileage Converter
Convert fuel efficiency values between Miles per Gallon (MPG) and Liters per 100km (L/100km) instantly.
Shoe Size Region Map
Convert shoe sizes across US, UK, EU, and Indian sizing systems.
Developer & Design Utilities
(5 Tools)WPM Speed Typing Test
Measure your actual typing speed and accuracy against a fixed paragraph string in a fun, 60-second test sequence.
Random Number Generator
Generate highly randomized integers within a user-defined minimum and maximum boundary, featuring a toggle to prevent duplicate results.
Pixels to REM CSS Fluid
Convert design pixel values to fluid CSS REM units based on a custom root baseline.
Hex to RGB Color Code
Convert color hex codes to standard RGB coordinates instantly.
Aspect Ratio Proportion
Calculate matching dimensions for standard media aspect ratios automatically as you type.