Everyday numbers
Free Calculator tools
Quick calculators for dates, finance, percentages, health estimates, pricing, tips, and time. This category includes 12 free browser-based tools designed for quick, instant workflows—no signup, no server uploads.
CALC index
Find the right calculator tools for your task
Browse and filter all 12 free calculator tools by keyword, use case, or priority. Discover the perfect tool for your workflow instantly.
Age Calculator
Calculate exact age from a date of birth.
Date Difference Calculator
Count days between two dates.
Loan Repayment Calculator
Estimate monthly loan payments.
Mortgage Calculator
Estimate monthly mortgage payments.
Percentage Calculator
Solve common percentage questions.
Discount Calculator
Calculate sale prices and savings.
Sales Tax Calculator
Add tax to a price quickly.
BMI Calculator
Estimate body mass index.
Calorie Estimate Calculator
Estimate daily maintenance calories.
Tip Calculator
Split tips and bills quickly.
Time Duration Calculator
Calculate elapsed time between two times.
Unit Price Calculator
Compare prices by unit.