Online calculators
Fast calculators for everyday numbers
Solve quick math, money, date, and probability questions with simple free calculators built into I Love PDF Tools.
Random Number Generator
Generate random integers in any range for samples, games, draws, and quick decisions.
Age Calculator
Calculate exact age from a birthday to today or to any target date.
Percentage Calculator
Find a percentage of any value for invoices, budgets, schoolwork, and planning.
Average Calculator
Paste a list of numbers and get the average, total, and item count.
Sales Tax Calculator
Calculate sales tax amount and the final price from a subtotal and tax rate.
Discount Calculator
Find discount savings and the final sale price after a percentage discount.
Probability Calculator
Calculate probability as a decimal, percentage, and odds from outcomes.
Free browser tools
Online calculators from I Love PDF Tools
Use these calculators for quick everyday work alongside your PDF tools. Each calculator has a clean URL, focused title, helpful instructions, and FAQ content so visitors can find the right tool quickly and get an answer without noise.