Smart calculators for real-life problems
Free, accurate, and easy-to-use calculators for construction, math, finance, conversion, and everyday life. Get instant results with transparent formulas and clear explanations.
Popular Calculators
Our most-used calculators, trusted by thousands of users
Daily Compound Interest Calculator
Calculate compound interest with daily compounding to see how your investments grow over time.
Loan Repayment Calculator
Calculate monthly payments, total interest, and repayment schedule for personal loans, auto loans, and more.
Mortgage Calculator
Calculate your monthly mortgage payment, total payment, and total interest.
Percentage Calculator
Calculate percentages, increases, and decreases quickly and easily.
Unit Converter
Convert between different units of length, weight, and temperature.
BMI Calculator
Calculate your Body Mass Index (BMI) to assess your weight status.
Browse by Category
Find the perfect calculator for your needs across our comprehensive categories
Construction & DIY
Tools and calculators for construction projects, measurements, and home improvement.
Math & Numbers
Mathematical calculators for algebra, geometry, statistics, and more.
Finance & Money
Financial calculators for loans, mortgages, investments, and budgeting.
Unit Conversion
Convert between different units of measurement quickly and accurately.
Electrical & Engineering
Engineering calculators for electrical work, circuits, and technical calculations.
Health & Fitness
Health calculators for BMI, calorie counting, body measurements, and wellness.
Date & Time
Date and time calculators for age, duration, time zones, and scheduling.
Everyday Life
Useful calculators for daily tasks, cooking, shopping, and general life calculations.
Why CalculatorPlanet?
Accurate Results
All our calculators use precise formulas and algorithms to ensure accurate results every time.
Transparent Formulas
We show you exactly how each calculation works, with clear explanations and step-by-step breakdowns.
Easy to Use
Our intuitive interface makes complex calculations simple, whether you're a professional or just getting started.