Calculators
Decision-support tools for sizing, cost, capacity, runtime, ownership, and other practical planning questions.
Estimate the cents-per-mile value of an award trip by comparing its cash fare with the miles and required cash charges used to book it. This is a personal comparison, not a fixed value for any airline’s miles.
Estimate moving time for a bike ride from distance and average speed. The estimate excludes stops and changing conditions.
Estimate a carry-on bag's rectangular interior volume in cubic inches from its length, width, and height. The result is a geometric estimate and does not account for rounded corners, pockets, compression, or airline size rules.
Estimate monthly commuting costs from commute days, round-trip distance, vehicle fuel efficiency, fuel price, and other monthly commute expenses. Enter current prices and costs for your situation.
Estimate an approximate Wald confidence interval for a sample proportion from the observed percentage, sample size, and selected z-score. The result is expressed as percentage bounds.
Convert a trip budget from one currency to another using an exchange rate you provide. The result is an estimate before any provider fees or rate adjustments.
Estimate your Washington, DC lodging budget from the nightly room rate, number of nights, and other per-night lodging costs you enter.
Estimate total transit fare from the fare per trip, trips per day, and number of travel days you enter. The estimate assumes each trip has the same fare and excludes other travel expenses.
Estimate the admission ticket budget for a Washington, DC museum visit by multiplying the number of visitors by the ticket price plus any per-person exhibit add-on. Enter prices in your chosen currency.
Estimate the total hourly parking cost for vehicles attending a downtown event by multiplying vehicle count, parked hours, and the hourly rate.
Estimate driving time from trip distance and average driving speed. This simple calculation does not account for traffic, stops, road conditions, or route changes.
Add estimated printing, venue, travel, and other campaign costs to calculate a simple campaign budget in US dollars.
Estimate total canvassing time by multiplying the number of volunteers by the hours each volunteer canvasses. This simple planning estimate assumes every volunteer contributes the same number of hours.
Estimate travel duration in hours from a route distance and average ground speed you provide. This arithmetic estimate does not include scheduled flight times, routing, winds, delays, or time zones.
Estimate a foreign transaction fee by multiplying the transaction amount by the fee rate you enter. This estimate uses the entered amount and rate only.
Estimate the fuel expense for a trip using its driving distance, your vehicle's fuel economy, and the price per gallon. The estimate assumes the same fuel economy and fuel price throughout the trip.
Calculate a vehicle's fuel economy in miles per gallon from miles traveled and fuel used, with an optional trip-planning estimate of fuel needed for a planned distance.
Estimate the Gini coefficient from grouped population shares and income shares using the trapezoidal approximation to the Lorenz curve. Enter each group's percentage of the population and its corresponding percentage of total income in ascending income order.
Estimate the room cost for a trip from the nightly rate, stay length, room count, guest count, and a user-selected occupancy adjustment. This is a planning estimate and excludes taxes and fees.
Estimate the cash value per hotel point by comparing an award stay's points cost with the cash rate and adding the taxes and fees you would pay in cash. This is a simple comparison based on the values you enter.
Estimate a mileage reimbursement amount by multiplying the distance traveled by a reimbursement rate you enter. Use the rate and distance in matching units and treat the result as a worksheet estimate based on your supplied inputs.
Convert a distance in miles to kilometers using the standard factor of 1 mile = 1.609344 kilometers. Enter a distance to see its kilometer equivalent.
Estimate the total minutes to allocate for a museum visit from the number of exhibits, average minutes per exhibit, and planned breaks.
Estimate a parking session's cost from hourly rate, parked hours, a flat entry fee, and a location adjustment. This simple model assumes one uninterrupted session and does not include taxes or time-based rate changes.
Calculate the percentage-point difference between two percentages by subtracting the starting percentage from the ending percentage.
Calculate average population density by dividing the number of residents by the land area. Enter population and area in matching units to get people per unit of area.
Estimate a future population from a starting population, an annual percentage growth rate, and a time period using a constant compound-growth model.
Estimate public transport costs by multiplying the fare you enter per ride by your planned rides and number of travelers. The estimate uses your inputs and does not apply local fares, passes, discounts, or transfer rules automatically.
Estimate a rental car trip total from the daily rate, rental days, estimated driving distance, fuel efficiency, fuel price, and additional trip charges. The estimate treats fuel as a distance-based cost and adds charges entered by the user.
Estimate each diner's share of a restaurant bill by dividing the subtotal, tax, tip, and any shared extra charge evenly among the group.
Estimate a restaurant tip and the total bill, then divide the total evenly among diners. Enter the pre-tip bill, tip percentage, and number of people. This estimate does not account for tax or other charges unless they are included in the bill amount.
Estimate a rideshare trip fare from the distance, ride time, base fare, and per-mile and per-minute rates you enter.
Estimate road trip fuel and lodging costs from your planned distance, vehicle fuel efficiency, fuel price, and number of lodging nights. The estimate excludes meals, tolls, parking, vehicle wear, and other expenses.
Estimate the pre-tax price by removing a user-supplied sales tax rate from a tax-inclusive total. The result is an arithmetic estimate and does not identify which taxes or charges are included in the total.
Calculate the percentage of eligible people who completed your survey using the number invited and the number of completed responses.
Estimate a trip's toll cost by counting standard and higher-cost toll segments and entering the charge for each. This simple estimate assumes each segment in a group has the same toll price.
Estimate each traveler's equal share of a trip's shared costs, with an optional shared-cost adjustment. Enter total lodging, transportation, and other shared expenses, the number of travelers, and any additional shared amount. This is a simple even split and does not account for different individual purchases or unequal participation.
Estimate your trip budget by combining planned nights, lodging, daily spending, transport, and a contingency allowance. The estimate uses the amounts you enter and does not retrieve live prices.
Estimate trip duration from route distance, average travel speed, and planned stop time. This simple estimate covers the distance and stops you enter and does not use live route or timetable data.
Estimate a cancellation fee by applying a cancellation rate to the total trip cost. This simple estimate assumes the stated rate applies to the entire cost.
Estimate a trip budget by adding transportation, lodging, daily food, and activities using the prices and trip details you enter.
Estimate the gallons of fuel needed for a trip by dividing trip distance in miles by vehicle fuel efficiency in miles per gallon.
Estimate a trip's total planned cost from traveler count, trip length, lodging, daily spending, and transportation. Enter your own expected amounts; the estimate does not include costs you leave out.
Estimate the number of vacation days you need for a trip by adding travel days, full days at the destination, and planned buffer days. This is a personal trip-planning estimate and does not check your employer’s leave balance or holiday calendar.
Estimate average walking speed from the distance traveled and the time taken. Enter distance in kilometers and time in minutes to see speed in kilometers per hour.
Estimate walking time from route distance and your average walking speed. The estimate assumes a steady pace and does not account for stops, terrain, or route conditions.
Estimate weekly and annual round-trip commuting time in Washington, DC, using your typical one-way travel time and commuting schedule. This worksheet estimate does not account for live traffic or transit conditions.
Estimate a monthly Washington, DC household budget from housing, transportation, groceries, utilities, and other spending. Enter your own amounts; this worksheet does not use live prices or predict an individual's actual expenses.
Estimate sales tax and the total cost of a Washington, DC purchase using the taxable purchase amount and a tax rate you provide. This is a simple estimate and does not determine whether a purchase is taxable or verify current rates.
Estimate a Washington, DC taxi fare from your own assumed starting fare, distance rate, trip distance, time rate, and elapsed time. This worksheet does not look up current regulated rates or add surcharges, tolls, or other charges.