Other Useful Calculators

A collection of essential tools for school, media, science, finance, and everyday problem solving.

Test Grade Category

Enter total and correct questions to see your score and letter grade instantly.

Grade Calculator

Combine assignments, exams, and weights to find your overall class grade.

Project your final semester grade from current scores and remaining exams.

Winning Percentage

Track wins, losses, and ties to calculate your exact success rate.

Resize images and video while preserving the correct width–height proportions.

Discover your vocal range and match it to common singer voice types.

Estimate how long a device will run from battery capacity and load current.

Hydroelectric Power

Calculate the power output of a hydro system from head, flow, and efficiency.

Size your solar array to meet daily energy needs and estimate production.

Timecode to Frames

Convert video timecode to exact frame counts at any frame rate.

Earthquake Impact

Compare earthquake magnitudes and energy release on the Richter scale.

Grams to Teaspoon

Convert ingredient weights in grams to kitchen-friendly teaspoon measures.

Dunk Calculator

See how high you need to jump to dunk based on height and reach.

Estimate total hiking time based on distance, elevation gain, and pace.

Image File Size

Work out image file size from dimensions, bit depth, and color channels.

Video File Size

Estimate video sizes using bitrate, duration, resolution, and codec settings.

Bandwidth Calculator

Convert between Mbps, MB/s, and estimate data usage or hosting needs.

Find how long a file will take to download on any connection speed.

Calculate time required to copy or move data across drives or networks.

IP Subnet Calculator

Generate subnet masks, host ranges, and CIDR blocks from any IP address.