80+ free calculators, redesigned
Calculate anything without the clutter.
A modern calculator hub with clean tools, direct answers, and clear explanations for finance, health, math, and everyday tasks.
Popular calculators
High-frequency tools, one tap away.
Browse by category
Every category has a dedicated page with filtering, descriptions, and direct links to each calculator.
11 tools
Date & Time
Calculate time durations, countdowns, time zone conversions, and work hours.
Countdown TimerDigital Stopwatch TimerHours and MinutesHours
37 tools
Finance
Mortgage, loan, tax, interest, investing, and personal finance calculators.
Compound InterestLoanMortgageSales Tax
6 tools
Health & Fitness
BMI, body fat, calorie, and pregnancy calculators for health and wellness.
BMIArmy Body FatBody FatCalorie
22 tools
Math & Statistics
Percentage, fraction, geometry, algebra, and statistics calculators.
Lattice MultiplicationLong MultiplicationMultiplication Tables PracticeDecimal to Percent
1 tool
Unit Converters
Convert between length, weight, digital, and other units.
Computer Storage Units Conversion
7 tools
Utility Calculators
Everyday tools for fuel, home improvement, science, and more.
Gas MileageMileageSquare FootageAverage Velocity
Frequently asked questions
Helpful answers for using the CalculatorNeo calculator collection.