All calculators & converters
Browse every free calculator and converter on OmniCalc — finance, salary by country, unit converters, math, health, astronomy, date & time and more.
💰 Finance 45
- Loan Calculator
- Mortgage Calculator
- Auto Loan Calculator
- Personal Loan Calculator
- Freelance Rate Calculator
- Compound Interest Calculator
- ROI Calculator
- Margin & Markup Calculator
- Break-Even Calculator
- VAT Calculator
- APY (Annual Percentage Yield)
- How much should go to needs, wants, and savings?
- Compound Annual Growth Rate
- Cap Rate Calculator
- Commission Calculator
- How long until your card is paid off?
- Current Ratio
- Debt-to-Income Ratio
- Discount Calculator
- Dividend Yield Calculator
- How much is your down payment?
- How much emergency fund do you need?
- Future Value of a Lump Sum
- Gross Profit & Margin
- Hourly to Salary Calculator
- Inflation Calculator
- Loan-to-Value (LTV) Calculator
- Markup Calculator
- Net Worth Calculator
- Overtime Pay Calculator
- Pay Raise Calculator
- P/E Ratio Calculator
- Present Value Calculator
- Price per Square Meter Calculator
- Profit & Margin
- Return on Equity (ROE) Calculator
- Total Revenue
- How long until your money doubles?
- Salary to Hourly Wage
- Sales Tax Calculator
- How much should you save each month?
- Simple Interest Calculator
- Project your SIP growth
- Straight-Line Depreciation Calculator
- Unit Price Calculator
🌍 Salary & Tax 1
📐 Converters 14
🔢 Math 43
- Scientific Calculator
- Percentage Calculator
- Statistics Calculator
- Absolute Value of a Number
- Arithmetic Sequence: nth Term and Sum
- Average of up to 5 numbers
- Circle Area, Circumference & Diameter
- Cone Volume
- Cube Root Calculator
- Cube Volume Calculator
- Cylinder Volume Calculator
- Distance Between Two Points
- Ellipse Area Calculator
- Exponent Calculator
- Factorial Calculator (n!)
- Fraction to Decimal Calculator
- GCF and LCM
- Geometric Sequence Calculator
- Triangle Area from Three Sides
- Logarithm Calculator
- Midpoint Between Two Points
- Modulo Calculator
- Parallelogram Area
- Percent Error
- What percent is the part of the total?
- Percent Off Calculator
- Percentage Change Calculator
- Permutations and Combinations
- Probability of an Event
- Pyramid Volume
- Pythagorean Theorem Calculator
- Solve ax² + bx + c = 0
- Solve a:b = c:d
- Rectangle Area Calculator
- Rectangular Prism (Box) Volume
- Right Triangle Calculator
- Calculate the nth Root of a Number
- Slope between two points
- Speed Calculator
- Sphere Volume Calculator
- Square Root Calculator
- Trapezoid Area
- Triangle Area
🏃 Health & Fitness 23
- BMI Calculator
- TDEE & Calorie Calculator
- Basal Metabolic Rate (Harris-Benedict)
- US Navy Body Fat Estimate (Male)
- Body Surface Area (Mosteller)
- How much weight will my calorie deficit burn?
- How many calories did you burn?
- Find your ideal weight for a target BMI
- Devine Ideal Body Weight
- Find Your Target Heart Rate Zone
- Lean Body Mass (Boer Formula)
- Daily Macronutrient Targets
- Maximum Heart Rate
- Estimate your one-rep max from a working set
- Ponderal Index (Corpulence Index)
- Daily Protein Intake
- How fast did you run?
- Smoking Cost Calculator
- Find your ideal training heart rate
- Waist-to-Height Ratio (WHtR)
- Waist-to-Hip Ratio
- How much water should you drink per day?
- Weight Loss Percentage
🔭 Astronomy 12
- Telescope Magnification Calculator
- Telescope Resolution Calculator
- Pixel Scale Calculator
- Field of View Calculator
- Angular Size Calculator
- Light Travel Time Calculator
- Air Mass Calculator
- Focal Ratio Calculator
- Dynamic Range Calculator
- Magnitude Brightness Ratio Calculator
- Orbital Period Calculator
- Star Trail Exposure Calculator
📅 Date & Time 4
🔧 Other 38
- Tip Calculator
- Aspect Ratio Calculator
- How long will your battery last?
- How many BTU does my room need?
- Carpet Cost Calculator
- How much concrete do you need?
- Density Calculator
- Dew Point Calculator
- Electricity Bill Calculator
- How much does your appliance cost to run?
- What grade do I need on the final?
- Force from Mass and Acceleration
- How much will your trip cost in fuel?
- Fuel Economy Calculator
- Gas Mileage Calculator (MPG)
- Your weighted GPA across 3 courses
- Grade Percentage Calculator
- Gravel Calculator (m³)
- Horsepower from Torque and RPM
- Kinetic Energy
- LED Resistor Calculator
- How much mulch do I need?
- Ohm's Law: Resistance & Power
- How much paint do you need?
- Power-to-Weight Ratio
- Display Pixel Density (PPI)
- Pressure Calculator
- Roof Pitch
- Room Area Calculator
- Slope Percentage & Angle
- Square Footage Calculator
- Tile Calculator
- Convert power and rpm to torque
- Voltage Divider Calculator
- Voltage Drop Calculator
- How many wallpaper rolls do I need?
- Wavelength Calculator
- Wind Chill (Feels-Like Temperature)