Finance
Budget Calculator
Smart monthly budget planner with 50/30/20 rule templates.
Tip Calculator
Split bills and calculate tips instantly.
Loan Calculator
Estimate monthly payments and amortization.
Compound Interest
Calculate investment growth over time.
Inflation Calculator
Calculate purchasing power and future value.
Auto Loan Calculator
Calculate monthly payments with trade-in and tax.
Retirement Calculator
Plan 401k growth and visualize your future.
529 Calculator
Plan specifically for college savings tax-free.
Pay Calculator
Convert salary to hourly and estimate take-home.
Investment Calculator
Compound growth with monthly contributions.
Amortization
Printable monthly loan repayment schedules.
Rent vs Buy
Net cost comparison over 30 years.
Tax Calculator
Estimate Federal tax liability and brackets.
401k Calculator
Plan retirement savings and employer match.
Math & Statistics
Grade Calculator
Calculate weighted averages and GPA.
Percentage Calculator
Solve common percentage problems.
Fraction Calculator
Add, subtract, multiply, and divide fractions.
Standard Deviation
Compute mean, variance, and SD.
Scientific Calc
Trig, logs, exponents, and more.
Volume Calculator
3D shapes: Sphere, Cone, Cylinder.
Health & Fitness
BMR Calculator
Calculate your Basal Metabolic Rate.
Calorie Calculator
Estimate daily calories for weight goals.
BMI Calculator
Check Body Mass Index with health categories.
Body Fat
US Navy tape measure method.
Pregnancy
Estimated due date and milestones.
Running Pace
Calculate speed for 5k, Marathon.
Construction
Utility
Time Calculator
Add durations and calculate time differences.
Random Number
Generate random numbers between a range.
Dice Roller
Roll virtual dice for games and decisions.
Age Calculator
Calculate exact age and next birthday.
Date Calculator
Count days between dates or add time.
Password Generator
Create strong, secure passwords instantly.
Business
Why Choose MyCalculator.app?
We are building the web's most reliable, fast, and privacy-focused calculator collection.
01Uncompromised Privacy
Your data never leaves your device. Unlike other sites that send your financial or health data to remote servers, all our calculations run 100% in your browser using JavaScript. This means your salary, weight, and budget details stay private.
02Scientific Accuracy
We verify every formula against industry standards. From the Mifflin-St Jeor equation for BMR to accurate Amortization algorithms for loans, you can trust the numbers we provide for your critical decisions.
03Lightning Fast
built with Next.js, our tools load instantly and work offline. No bloated ads or pop-ups slowing you down—just the answers you need, the moment you need them.
Our Commitment to Quality
MyCalculator.app is designed to be the last calculator site you'll ever need. We regularly update our tools based on user feedback and changing financial regulations (like tax brackets). Whether you are a student checking a grade, a homebuyer planning a mortgage, or just someone trying to split a bill, we aim to provide a premium, free experience.
Explore our collection of 40+ calculators across Finance, Health, Math, Construction, and everyday utilities. Innovations like our Smart Budget Planner and Visual Loan Calculator go beyond simple inputs to give you actionable insights.