Calculators
Decision-support tools for sizing, cost, capacity, runtime, ownership, and other practical planning questions.
Estimate planned aircraft fuel use from an entered hourly burn rate, flight time, and reserve percentage. This arithmetic estimate assumes a constant burn rate and does not determine safe or legally required fuel reserves.
Estimate the fuel remaining after a planned flight duration using onboard fuel and an assumed steady burn rate. This simple arithmetic model does not determine regulatory reserves, flight suitability, or operational safety.
Estimate an antenna’s gain in dBi from its measured power density, distance, and input power using an idealized far-field model.
Estimate an average across entered event scores on a 0–100 scale. This worksheet does not apply official Army event tables or determine a service fitness-test result.
Estimate the amount of data that can be in transit on a network link by multiplying its bandwidth by its round-trip time. Enter bandwidth in megabits per second and round-trip time in milliseconds. The result is shown in megabits and converted to megabytes using 8 bits per byte.
Estimate the total cubic feet of boxes for a barracks move by multiplying the number of rooms by boxes per room and volume per box.
Estimate the combined geometric volume of identical cargo items by multiplying the item count by each item's length, width, and height. Enter dimensions in centimeters to get a total in cubic centimeters.
Add cargo and crew weights to estimate their combined load in pounds. Compare the estimate with the boat's published capacity, allowing for other onboard weight and operating conditions.
Calculate a boat's average speed from the distance traveled and the time taken. Enter distance in nautical miles and time in hours to get speed in knots.
Estimate the upward buoyant force on a fully submerged object using the displaced fluid's density, gravitational acceleration, and the object's displaced volume. The estimate assumes a uniform fluid and does not determine whether a vessel or structure is safe or stable.
Estimate signal power loss in a cable run from cable length, frequency, attenuation per unit length, and connector loss. This simplified estimate assumes uniform cable attenuation and sums connector losses in decibels.
Estimate total mobile data use over a period from daily hours spent streaming video, browsing the web, and making video calls. Uses average data rates of 1.5 GB per streaming hour, 0.06 GB per browsing hour, and 0.5 GB per video call hour.
Convert an angle in degrees to NATO mils, using 6,400 mils for one full circle.
Estimate the total geometric volume of a group of same-sized crates in cubic feet by multiplying the crate count by each crate’s length, width, and height.
Estimate the time required to download a file from its size and connection speed. Enter the file size in megabytes and the download speed in megabits per second. The estimate assumes a steady speed and uses decimal units.
Estimate the total meal budget for a field deployment from the number of people, meals per day, deployment days, and cost per meal.
Estimate the total weight of field rations for a group over a set number of days using the weight of one person's ration per day.
Estimate transfer duration in hours from file size in decimal gigabytes, connection speed in megabits per second, and the share of that speed available to the transfer.
Estimate aircraft endurance in hours from onboard usable fuel, a selected fraction allocated to the estimate, and average fuel burn rate. This is a simplified planning calculation, not an operational flight plan.
Count the hexadecimal groups in an IPv6 address before and after compressing its longest consecutive run of zero groups. This calculator assumes a valid, fully expanded eight-group address and applies the standard rule that a run of two or more zero groups may be replaced by ::.
Estimate the number of IPv6 addresses in a pool from its prefix length and reserved host bits. The calculation assumes the remaining bits are available as address choices.
Convert a speed in knots to its equivalent in miles per hour using the standard statute-mile conversion factor.
Estimate round-trip network latency from one-way propagation delay, processing time, and queueing time at each endpoint. Enter milliseconds for each component.
Calculate straight-line grid distance from eastward and northward grid units and the distance represented by each grid unit.
Convert a measured distance on a map into the corresponding ground distance using the map's representative fraction scale.
Estimate a simple monthly gross pay total from user-entered base pay and allowances. This worksheet does not apply official military pay tables, taxes, deductions, or eligibility rules.
Estimate an annual pension amount from service years, pensionable monthly pay, and an assumed accrual rate. This simplified estimate does not determine eligibility or account for a specific military pension system.
Convert an angle in NATO mils to degrees using a 6,400-mil full circle. Other mil systems use different circle definitions and produce different results.
Estimate planned nautical miles from a measured chart distance and the chart scale relationship. Enter the distance measured on the chart, the real-world nautical miles represented by a known scale length, and that scale length in inches.
Convert a distance in nautical miles to kilometers using the standard conversion factor of 1 nautical mile = 1.852 kilometers.
Convert a distance in international nautical miles to statute miles using the exact conversion factor of 1 nautical mile = 1.150779448 statute miles.
Estimate the total usable address capacity across a set of subnets by subtracting reserved addresses from each subnet's address count, then multiplying by the number of subnets.
Estimate the total number of available addresses across network pools by subtracting reserved addresses from each pool and multiplying by the pool count.
Estimate the total cable length needed for a network installation by adding the length of planned runs and service-loop allowance.
Estimate the total number of network addresses to plan across devices and sites. This simple multiplication model assumes every device needs the same number of addresses at every site.
Estimate the rack space required for a group of network devices by multiplying device count by rack units per device and adding spare units. This estimate assumes each device uses the same rack height and that spare space is reserved in whole rack units.
Estimate total device capacity across a network by multiplying the number of subnets, devices per subnet, and subnets per site. This planning estimate assumes every subnet and site can use its stated device capacity.
Estimate effective data throughput from transferred data volume and elapsed time. Enter the amount of data and duration, then choose units to see the average transfer rate.
Estimate the combined planform area of propeller blades in square feet by multiplying blade count by blade length and average blade width. This simple estimate treats each blade as a rectangle.
Estimate the geometric radar horizon from radar and target heights above a shared surface using a standard effective-Earth-radius approximation. The result is the combined line-of-sight horizon distance in kilometers.
Estimate a planning clearance budget by multiplying the number of radio links by the clearance allowance per link, then adding spare clearance. Enter all clearance values in meters.
Estimate the geometric radio horizon between two antennas from their heights above local ground, using an effective Earth-radius factor to represent a simplified atmosphere. The result is a theoretical distance and does not account for terrain, buildings, equipment, or signal quality.
Estimate received power for a radio link using a free-space path loss model. Enter transmit power, antenna gains, frequency, distance, and combined system losses. The estimate excludes terrain, obstacles, fading, and other site-specific effects.
Estimate the combined attenuation across path segments and connectors by adding their specified losses in decibels.
Estimate total training time from reserve drill days and annual training days using the hours scheduled for each type of day.
Estimate the number of storage boxes needed for service records by dividing total pages by pages per box. The estimate assumes each record has the same page count and all boxes have the same usable capacity.
Calculate signal-to-noise ratio in decibels from measured signal power and noise power. Enter both values in the same power unit.
Estimate the ideal time to upload a file from its size in megabytes and your upload speed in megabits per second. The estimate assumes a steady connection and uses decimal units.
Calculate the percentage of a measurement period that a network service was available, using total observation time and recorded downtime in the same unit.
Estimate wave speed from wavelength and period using the basic relationship between wave speed, wavelength, and period. This estimate assumes a regular wave pattern and consistent units.