All Calculators
101 tools organized by category. Jump to any section.
Finance
Loans, investments, taxes, and money · 21 tools
Currency Converter
Convert between 30 world currencies instantly. Rates are reference rates.
EMI Calculator
High-precision amortization for loans & mortgages.
SIP Calculator
Project returns on systematic investment plans.
Compound Interest Calculator
See how your money grows with compounding.
Mortgage Calculator
Calculate monthly mortgage payments with taxes.
Loan Eligibility Calculator
Find out how much loan you can qualify for.
Income Tax Calculator
Estimate your annual income tax liability.
Retirement Calculator
Plan how much you need to retire comfortably.
Fixed Deposit Calculator
Calculate maturity value of fixed deposits.
Recurring Deposit Calculator
Calculate returns on monthly recurring deposits.
Mutual Fund Returns
Calculate returns on lump sum MF investments.
Stock Profit/Loss
Calculate gains or losses on stock trades.
Dividend Yield Calculator
Calculate annual dividend yield on a stock.
Credit Card Interest
How much credit card interest will cost you.
Debt Payoff Calculator
Plan when you will be debt-free.
Net Worth Calculator
Calculate your total net worth.
Salary to Hourly
Convert annual salary to hourly rate.
Tip Calculator
Split bills and calculate tips fairly.
GST Calculator
Calculate GST inclusive & exclusive amounts.
PPF Calculator
Calculate Public Provident Fund maturity.
NPS Calculator
Plan your National Pension Scheme returns.
Health
BMI, calories, fitness and wellness · 15 tools
BMI Calculator
Calculate your Body Mass Index.
BMR Calculator
Basal Metabolic Rate — calories at rest.
Calorie Calculator
Daily calorie needs for your goals.
Macro Calculator
Calculate protein, carbs, and fat ratios.
Body Fat %
Estimate body fat percentage.
Ideal Weight
Find your ideal weight based on height.
Water Intake
Daily water needs based on weight & activity.
Pregnancy Due Date
Estimate your baby's due date.
Ovulation Calculator
Find your fertile window.
Heart Rate Zone
Training zones based on age.
VO2 Max
Estimate aerobic fitness capacity.
Running Pace
Calculate running pace per km/mile.
One-Rep Max
Calculate your 1RM for any lift.
Sleep Cycle
Best bedtime based on wake time.
Age Calculator
Calculate exact age in years, months, days.
Math
Scientific, statistical, and calculus · 15 tools
Percentage Calculator
Calculate percentages, increases, and decreases.
Fraction Calculator
Add, subtract, multiply & divide fractions.
Quadratic Equation
Solve ax² + bx + c = 0.
Statistics Calculator
Mean, median, mode, and std deviation.
Probability Calculator
Calculate event probability.
LCM & GCD Calculator
Find LCM and GCD of two numbers.
Logarithm Calculator
Calculate log base any.
Trigonometry
sin, cos, tan for any angle.
Binary Converter
Convert between binary, decimal, hex.
Ratio Calculator
Simplify and scale ratios.
Average Calculator
Mean of multiple numbers.
Factorial Calculator
Calculate n! for any number.
Prime Number Checker
Check if a number is prime.
Power / Exponent
Calculate base^exponent.
Square Root
Find square & cube roots.
Crypto
Bitcoin, staking, DeFi and trading · 10 tools
Crypto Profit Calculator
Calculate profit/loss on crypto trades.
Bitcoin Mining Calculator
Estimate Bitcoin mining profitability.
Ethereum Gas Calculator
Calculate gas fees in USD.
Staking Rewards
Project staking rewards over time.
DCA Calculator
Dollar-cost averaging over time.
Impermanent Loss
Calculate IL on LP positions.
Crypto Tax Calculator
Estimate capital gains tax on crypto.
NFT ROI Calculator
Calculate NFT return on investment.
Crypto Converter
Convert crypto to USD.
Portfolio Calculator
Track multi-coin portfolio value.
Engineering
Electrical, mechanical, and civil · 10 tools
Ohm's Law Calculator
V = IR, find voltage, current, or resistance.
Voltage Divider
Calculate output voltage for a divider.
Electrical Power
Calculate electrical power (P = VI).
Torque Calculator
Torque from force and lever arm.
Unit Converter
Convert between metric and imperial.
Concrete Calculator
Calculate concrete volume for slabs.
Pipe Flow Calculator
Flow rate through circular pipe.
Gear Ratio Calculator
Calculate gear ratios and output RPM.
RPM Calculator
Surface speed to RPM conversion.
Resistor Color Code
Resistance from 4-band color code.
Daily Life
Tips, travel, cooking and more · 10 tools
Fuel Cost Calculator
Trip fuel cost from distance and MPG.
Travel Time Calculator
Estimate travel time from distance & speed.
Date Difference
Days between two dates.
Split Bill Calculator
Split expenses fairly between people.
Cooking Conversion
Convert cups, tablespoons, grams.
Paint Calculator
Gallons of paint needed for a room.
Carpet & Tile Calculator
Flooring area and boxes needed.
Countdown Calculator
Time remaining until an event.
Gift Budget Calculator
Budget and split gift costs.
Quick Tip Calculator
Fast tip calculation for any bill.
Education
GPA, grades, and study tools · 10 tools
GPA Calculator
Calculate GPA on 4.0 scale.
CGPA Calculator
Calculate cumulative GPA across semesters.
Percentage to GPA
Convert percentage to 4.0 GPA.
Grade Calculator
Weighted grade for assignments & exams.
Exam Score Predictor
Score needed on final for target grade.
Study Hours Calculator
Weekly study hours for your courses.
Assignment Weight
Effect of assignment on final grade.
Class Rank Calculator
Your percentile in class.
Attendance Calculator
Classes you can skip safely.
Reading Speed
Words per minute reading speed.
Business
ROI, margins, and SaaS metrics · 10 tools
ROI Calculator
Return on investment percentage.
Break-Even Calculator
Units to sell to cover costs.
Profit Margin
Gross and net profit margins.
Markup Calculator
Selling price from cost and markup.
Discount Calculator
Final price after discount.
CAGR Calculator
Compound annual growth rate.
Payroll Calculator
Net pay after taxes & deductions.
Inventory Turnover
Efficiency of inventory management.
Customer LTV
Lifetime value of a customer.
Ad ROAS Calculator
Return on ad spend.