Everyday Calculators

Calculate your weighted average grade from multiple assessments.

Calculate your Grade Point Average (GPA) on a 4.0 scale.

Calculate optimal bedtime or wake-up time based on 90-minute sleep cycles.

Calculate your daily calorie needs based on your goal — lose, maintain, or gain weight.

Estimate your monthly electricity bill based on appliance usage.

Calculate how many litres of paint you need to cover a room or surface.

Calculate the volume of concrete needed for a slab, footing, or column.