All SpecWhale tools

Find overlapping working hours between two daily availability windows.

Estimate shift end time in minutes after midnight from start time, shift length, and breaks.

Calculate billable hours after non-billable time and utilization percentage.

Calculate BMI from kilograms and centimeters.

Estimate calories burned from MET value, body weight, and duration.

Convert running pace in minutes per mile into speed.

Convert speed into running pace in minutes per mile.

Estimate VO2 max from 12-minute Cooper test distance.

Calculate strength training volume from sets, reps, and load.

Split a daily calorie target across meals and snacks.

Calculate running cadence from steps and time.

Estimate deck screw count from joists, boards, and screws at each crossing.

Estimate fence posts from total fence length and post spacing.

Estimate topsoil volume from area and depth.

Estimate sod rolls from lawn area and roll coverage.

Estimate tile count for a backsplash from area, tile size, and waste.

Estimate quarts of paint for small touch-up areas.

Estimate concrete volume for cylindrical footings or posts.

Estimate cords of stacked firewood from stack dimensions.

Estimate trip per diem total from daily rate and eligible days.

Estimate rental car cost from daily rate, taxes, fees, and fuel.

Estimate taxi or rideshare fare from base fare, distance, time, and fees.

Split tolls and parking across travelers.

Estimate remaining luggage weight allowance after packed items.

Estimate local arrival clock time from departure time, flight duration, and time-zone offset change.

Estimate number of stops from trip distance and distance between stops.

Estimate trip emissions from distance and manually entered emissions factor.

Estimate password entropy and calculate exact keyspace size from length and character set size.

Estimate brute-force time from keyspace size and guesses per second.

Calculate exact PIN combinations and entropy from digit count.

Estimate passphrase entropy from word count and word-list size.

Calculate exact one-time backup-code search space from code count, length, and alphabet size.

Calculate exact keyspace size and entropy for any length and alphabet size.

Calculate refresh timing from token lifetime and safety buffer.

Estimate active session window from idle timeout and absolute timeout.

Convert hourly pay into annual salary from weekly hours and weeks per year.

Calculate weekly pay with overtime multiplier after regular hours.

Convert annual income target into a contractor day rate.

Estimate invoice late fee from balance, monthly fee rate, and days late.

Calculate cash discount amount and discounted price.

Estimate landed cost from item cost, shipping, duty, and units.

Calculate contribution margin from price and variable cost.

Calculate operating margin from operating income and revenue.