Calculators
Free online calculators: percentage, ratio, date, unit, math calculators and more. Instant results, no registration required.
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Jump straight to the most relevant tools in this category.
Electricity Cost Calculator
Calculate appliance electricity costs.
Aspect Ratio Calculator
Calculate image and video aspect ratios.
Percentage Calculator
Calculate percentages and percent changes online for free.
Age Calculator
Calculate your age from birthdate instantly online.
Date Difference Calculator
Calculate days between two dates instantly online.
VAT Calculator
Calculate VAT online — add or remove tax from prices.
Loan Calculator
Calculate loan payments, interest, and amortization schedules.
BMI Calculator
Calculate Body Mass Index (BMI) and health metrics.
Unit Converter
Convert between different units of measurement instantly.
Time Calculator
Calculate time differences, add or subtract time periods.
Discount Calculator
Calculate discounts, sale prices, and savings amounts.
Interest Calculator
Calculate simple and compound interest earnings
Random Number Generator
Generate random numbers within a specified range.
GPA Calculator
Calculate your GPA instantly
Mortgage Calculator
Calculate monthly mortgage payments
Hours Calculator
Calculate hours worked and pay
Tax Calculator
Add or remove sales tax
Investment Calculator
Calculate investment returns
Date Calculator
Add/subtract date periods
Calorie Calculator
Calculate daily calories
Retirement Calculator
Plan retirement savings
BMR Calculator
Calculate basal metabolic rate
Fraction Calculator
Calculate with fractions
Percentage Difference Calculator
Compare values with percentages
ROI Calculator
Calculate return on investment
Currency Converter
Convert world currencies
Lease Calculator
Calculate lease payments
Debt Calculator
Plan debt payoff strategy
Compound Interest Calculator
Calculate compound growth
Square Footage Calculator
Calculate area and square feet
Gas Mileage Calculator
Calculate MPG and fuel costs
Grade Calculator
Calculate required final exam grade
Water Intake Calculator
Calculate daily water needs
Reading Time Calculator
Estimate reading time for any text
Tip Splitter
Split bill and tip calculator