➗Basic calculator
Perform fast addition, subtraction, multiplication, and division.
Solve everyday math, finance, time, and solid geometry problems in one place. No sign-up, no ads, just instant answers in your browser.
Perform fast addition, subtraction, multiplication, and division.
Find X% of Y, percentage change, and discounts in seconds.
Solve equations of the form ax² + bx + c = 0 with real roots.
Compute interest and total amount for simple rate loans.
Estimate monthly payments for home, car, and personal loans.
See how savings grow with compounding over time.
Calculate exact age in years, months, and days.
Find days between two calendar dates.
Compute volume of a right circular cylinder from radius and height.
Find volume and area for cones and spheres.
Volume and surface area for cubes and rectangular prisms.
Estimate body mass index from height and weight.
Approximate daily calories using a simple BMR + activity factor.
These tools are estimates only and do not replace medical advice.
Find exact age from date of birth to today’s date.
Get years, months and days between two calendar dates.
Add or subtract clock times and find duration between two times.
Convert total minutes into hours and minutes.
Combine course grade points and credits to estimate GPA.
See what score you need on the final to reach a target course grade.
Estimate concrete volume for simple slabs from length, width and depth.
Quickly see network and broadcast addresses from an IPv4 CIDR.
Create random mixed-character passwords at your chosen length.
Start with a simple km-to-miles converter and add more units later.