Home calculation glossary
Simple definitions for electricity, battery, construction and land-measurement terms used in GharGanit calculators.
A — Acre, Ah and apparent power
An acre is a standard area equal to 43,560 square feet. Ah means amp-hours: battery charge capacity at a stated voltage, not usable energy by itself. Apparent power is measured in VA and combines the voltage-current product used to rate equipment such as inverters.
B — Bigha, battery bank and built-up area
Bigha is a regional land-unit name whose area can change by state, district or settlement system. A battery bank is one or more batteries connected to provide a required voltage and capacity. Built-up area generally includes covered floor area and wall thickness; confirm the exact project definition.
C — Cent, coverage and connected load
A Cent is one-hundredth of an acre, exactly 435.6 sq ft. Coverage is the area a product can cover under stated conditions, such as paint per litre. Connected load is the combined running power of appliances connected to a supply or backup system.
D — Decimal, depth of discharge and dry-volume factor
A Decimal is one-hundredth of an acre and equals 435.6 sq ft. Depth of discharge is the share of battery capacity planned for use before recharging. A dry-volume factor is an editable material allowance used when a finished wet volume is translated into loose dry ingredients.
E — Efficiency, energy charge and estimate
Efficiency is useful output divided by input, normally shown as a percentage. An energy charge is the part of an electricity bill based on billed kWh and the applicable rate or slab. An estimate is a planning result based on stated inputs and is not a guarantee or professional certification.
F — Factor, fixed charge and formula
A factor is a multiplier used to connect two quantities; regional land factors must include location and source context. A fixed charge may appear on an electricity bill independently of energy use. A formula describes the relationship; the substitution line shows the actual values placed into it.
G — Gaj, gross area and Guntha
Gaj on GharGanit means square yard, an area exactly equal to 9 sq ft; it does not mean a linear yard. Gross area is measured before subtracting openings or exclusions. A Guntha is commonly treated as one-fortieth of an acre, 1,089 sq ft, where that convention applies.
K — Kanal, Katha, kW and kWh
Kanal is a regional area unit that needs record and location context. Katha, Cottah or Kattha also varies by location. A kilowatt, kW, is 1,000 watts of power. A kilowatt-hour, kWh, is energy over time; one billed electricity unit is 1 kWh.
L — Load factor, locality and losses
Load factor in an appliance estimate is the average share of full input power used during the entered time. Locality matters when a regional land name has more than one convention. Losses are the visible portions of stored or generated energy not delivered to the final load.
M — Marla, module and mortar joint
Marla is a regional area unit often related to Kanal, but the record convention still needs checking. A brick module includes the brick plus the assumed mortar-joint thickness. A tile module can include the planned joint or layout allowance, depending on the calculator.
P — Peak sun hours, power factor and preliminary quantity
Peak sun hours turn varying sunlight into equivalent full-sun hours for a solar estimate. Power factor connects real watts with apparent VA. A preliminary quantity is an early material estimate from dimensions and stated allowances; it is not structural design or a final order.
R — Rate, regional unit and rounding
A rate is a user-entered price per unit or a value read from a relevant document; examples are not India-wide tariffs or prices. A regional unit needs place context. Rounding is kept until the end so intermediate precision is not lost before a purchase quantity is produced.
S — Sq ft, square metre, source and surge
Sq ft means square feet. A square metre is exactly 10.7639104167 sq ft. A source is the document or official page that supports a factor, method or instruction. Starting surge is the brief higher power some motors or compressors require when they begin operating.
T–V — Tariff, usable energy, VA, voltage and volume
A tariff sets electricity charges and rules for a connection category and period. Usable energy is the share available after discharge limits and losses. VA rates apparent power; voltage is electrical potential. Volume is three-dimensional space and is calculated from area and thickness or depth.
W–Z — Wastage, watt and watt-hour
Wastage is an editable allowance for cuts, breakage, handling or site conditions, never a universal fixed rule. A watt measures the rate of power use. A watt-hour measures energy: one watt used for one hour equals one watt-hour. One thousand watt-hours equal one kWh.