How do I work with gravity?
Enter 9.81 m/s² (or 32.17 ft/s²) as the acceleration to approximate the force due to Earth's gravity.
Step-by-step walkthrough
Force Calculator Guide
Use this companion guide beside the interactive calculator to make sure you understand the “why” behind every click. Each section includes the classroom explanation, student-friendly language, and quick practice prompts.
Before you start
Collect the data points listed below and double-check their units. Keeping an organized “givens” list is one of the fastest ways to reduce math errors and impress exam graders.
- force
- newton
- mass
Detailed procedure
Step 1
Choose your preferred mass and acceleration units.
Step 2
Enter the values with appropriate signs to indicate direction if desired.
Step 3
Read the force in newtons, pound-force, and kilonewtons.
Teaching & troubleshooting tips
Can I solve for mass or acceleration instead?
Use the speed/distance/time layout as a template; this calculator currently solves only for force.