ToolPocket
ToolPocket tools

Calculators

Everyday math and money calculations, made clear.

Use these calculators for percentages, pay, energy costs, file transfers, image proportions, and weighted averages. Each page shows its inputs and the formula used.

Popular tools

Percentage Calculator

Find a percentage, compare values, or calculate a percentage change.

Salary Calculator

Compare hourly, daily, weekly, monthly, and annual pay.

Electricity Cost Calculator

Estimate energy use and electricity cost for an appliance.

All calculators

Download Time Calculator

Estimate how long a file takes to download at a given connection speed.

Aspect Ratio Calculator

Simplify a width-to-height ratio and resize while keeping proportions.

Weighted Average Calculator

Calculate a weighted mean from values and their relative weights.

Choose the calculation that fits

Start with the quantity you know and select the tool that describes the answer you need. Check the assumptions on each calculator before relying on an estimate.

Related categories

Student tools

Plan grades, attendance, and academic progress.

Converters

Convert common digital storage and connection units.

Date tools

Work out dates, durations, ages, and countdowns.