All SpecWhale tools

Solve ax² + bx + c = 0 with the quadratic formula, including complex roots.

Calculate triangle area from base and height.

Generate random hex, RGB, and HSL colors.

Generate placeholder Lorem Ipsum text locally, by word, sentence, or paragraph.

Generate random username ideas locally, combining adjectives, nouns, and numbers.

Pick a random item from a list with a simple wheel-style result.

Split a bill, tax, and tip across multiple people.

Calculate sales tax and total price from a tax rate.

Add or estimate VAT from a net amount and VAT rate.

Calculate commission from sales and commission rate.

Calculate price per square foot for real estate, flooring, and projects.

Calculate cost per mile from total cost and distance.

Calculate advertising cost per thousand impressions.

Calculate click-through rate from impressions and clicks.

Calculate cost per click from ad spend and clicks.

Calculate return on ad spend from revenue and ad cost.

Calculate compound annual growth rate (CAGR) between a starting and ending value.

Calculate annual percentage yield from nominal rate and compounding periods.

Estimate how long it takes money to double using the Rule of 72.

Calculate annual depreciation using straight-line depreciation.

Calculate net profit margin from revenue and net profit.

Estimate roofing squares from roof area and waste.

Estimate wallpaper rolls from wall area and roll coverage.

Estimate fence panels and posts from perimeter and panel length.

Estimate deck boards from deck dimensions and board width.

Estimate rectangular pool volume from length, width, and average depth.

Estimate soil volume for raised beds and landscaping.

Convert a number between bases from 2 to 36.

Convert binary numbers to decimal and hexadecimal.

Convert hexadecimal numbers to decimal and binary.

Convert between Roman numerals and decimal numbers.

Convert text to ASCII codes or ASCII codes back to text.

Convert text to International Morse code.

Convert letters to the NATO phonetic alphabet.

Break a URL into protocol, host, path, query, and hash parts.

Parse query string parameters into readable key-value pairs.

Calculate rectangle area and perimeter from length and width.

Calculate square area, perimeter, and diagonal.

Calculate a cube's volume and surface area from a single side length.

Calculate rectangular box volume from length, width, and height.

Calculate cylinder volume and surface area.

Calculate sphere volume and surface area from radius.

Calculate cone volume from radius and height.

Calculate density from mass and volume, or solve for either given the other two.

Calculate speed from distance and time, or solve for distance or time instead.

Calculate acceleration from velocity change and time.

Calculate force from mass and acceleration.

Calculate kinetic energy from mass and velocity.

Calculate gravitational potential energy.

Calculate voltage from current and resistance.

Calculate electrical power from voltage and current.

Estimate battery runtime from capacity and load.

Convert battery mAh and voltage to watt-hours.

Estimate heat index from temperature and relative humidity.

Estimate wind chill from temperature and wind speed.

Estimate dimensional weight from package dimensions and divisor.

Calculate package length plus girth for shipping limits.

Scale a recipe ingredient amount for more or fewer servings.

Calculate bread dough hydration percentage.

Calculate coffee or water amount from brew ratio.