Epoxy Circle Calculator

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Bolt Circle Calculator

Enter the bolt circle diameter and number of bolts to get the angle between bolts and the chord length (adjacent bolt spacing) for accurate layouts.
Mohr's Circle Calculator

Calculate Mohr's Circle with precision using σx, σy, and τxy inputs. Determine principal stresses and maximum shear stress for material analysis and structural design.
Friction Calculator

Compute friction force from normal force and coefficient of friction. Enter normal force (N) and coefficient (μ) to get F = μN instantly in newtons.
Gas Line Calculator

Enter total BTU, pipe length (feet), and pressure (inches water column) to get the recommended gas pipe size and estimated flow rate.
Kinetic Energy Calculator

Calculate kinetic energy fast: enter mass (kg) and velocity (m/s) to get energy in joules (J). Ideal for physics problems, labs, and quick checks.

Stopwatch

Use this online stopwatch to measure time intervals precisely. Start, stop, and reset with ease.
Countdown Timer

Free online countdown timer. Set hours, minutes, and seconds to count down easily. Simple, fast, and useful for work, study, or daily tasks.
Counter

Simple online counter tool. Increase, decrease, or reset numbers instantly. Set custom step values and limits with ease.
Online Alarm Clock

Use our free online alarm clock to wake up, stay on schedule, or manage tasks. Set alarms quickly and customize sound and time right in your browser.