A little help for
farmers & growers.
Practical arithmetic for land, water and harvests. Your collection is a starting point; all tools remain available.
Irrigation water volume
Calculate water volume for a selected irrigation depth and area.
Drip irrigation runtime
Estimate runtime to deliver a specified volume through a number of equal emitters.
Harvest gross revenue
Estimate saleable harvest and gross revenue after a stated loss fraction.
Feed stock duration
Estimate duration of a known feed stock at a supplied daily amount per animal.
Seed germination percentage
Calculate observed germination from a counted seed test.
Grain moisture shrink
Estimate final mass when water is removed and dry matter is retained.
Kilograms per hectare to tonnes per hectare converter
Convert kilograms per hectare (kg/ha) to tonnes per hectare (t/ha), reverse the direction, or convert a batch. Compare crop yield reports per unit cultivated area.
Kilograms per hectare to pounds per acre converter
Convert kilograms per hectare (kg/ha) to pounds per acre (lb/ac), reverse the direction, or convert a batch. Compare crop yield reports per unit cultivated area.
Kilograms per hectare to kilograms per acre converter
Convert kilograms per hectare (kg/ha) to kilograms per acre (kg/ac), reverse the direction, or convert a batch. Compare crop yield reports per unit cultivated area.
Kilograms per hectare to yield grams per square meter converter
Convert kilograms per hectare (kg/ha) to yield grams per square meter (g/m²), reverse the direction, or convert a batch. Compare crop yield reports per unit cultivated area.
Kilograms per hectare to yield kilograms per square meter converter
Convert kilograms per hectare (kg/ha) to yield kilograms per square meter (kg/m²), reverse the direction, or convert a batch. Compare crop yield reports per unit cultivated area.
Tonnes per hectare to pounds per acre converter
Convert tonnes per hectare (t/ha) to pounds per acre (lb/ac), reverse the direction, or convert a batch. Compare crop yield reports per unit cultivated area.
Square meters to square feet converter
Convert square meters (m²) to square feet (ft²), reverse the direction, or convert a batch. Compare property listings, floor plans, field areas and land records.
Square meters to acres converter
Convert square meters (m²) to acres (ac), reverse the direction, or convert a batch. Compare property listings, floor plans, field areas and land records.
Square meters to hectares converter
Convert square meters (m²) to hectares (ha), reverse the direction, or convert a batch. Compare property listings, floor plans, field areas and land records.
Square meters to square kilometers converter
Convert square meters (m²) to square kilometers (km²), reverse the direction, or convert a batch. Compare property listings, floor plans, field areas and land records.
Square meters to square yards converter
Convert square meters (m²) to square yards (yd²), reverse the direction, or convert a batch. Compare property listings, floor plans, field areas and land records.
Square meters to square miles converter
Convert square meters (m²) to square miles (mi²), reverse the direction, or convert a batch. Compare property listings, floor plans, field areas and land records.
Liters per second to liters per minute converter
Convert liters per second (L/s) to liters per minute (L/min), reverse the direction, or convert a batch. Compare pump, irrigation, ventilation and filling flow rates.
Liters per second to US gallons per minute converter
Convert liters per second (L/s) to US gallons per minute (US gal/min), reverse the direction, or convert a batch. Compare pump, irrigation, ventilation and filling flow rates.
Liters per second to cubic meters per second converter
Convert liters per second (L/s) to cubic meters per second (m³/s), reverse the direction, or convert a batch. Compare pump, irrigation, ventilation and filling flow rates.
Liters per second to cubic meters per hour converter
Convert liters per second (L/s) to cubic meters per hour (m³/h), reverse the direction, or convert a batch. Compare pump, irrigation, ventilation and filling flow rates.
Liters per second to cubic feet per minute converter
Convert liters per second (L/s) to cubic feet per minute (ft³/min), reverse the direction, or convert a batch. Compare pump, irrigation, ventilation and filling flow rates.
Liters per second to cubic feet per second converter
Convert liters per second (L/s) to cubic feet per second (ft³/s), reverse the direction, or convert a batch. Compare pump, irrigation, ventilation and filling flow rates.
Sri Lanka income tax estimator
Estimate annual progressive income tax using your verified brackets.
Sri Lanka monthly tax estimator
Annualize monthly income and estimate an average monthly tax.
Sri Lanka EPF estimator
Calculate employee and employer contributions from supplied rates.
Sri Lanka ETF estimator
Estimate employer ETF contribution using a supplied rate.
Percentage calculator
Find a percentage of a number.
Percentage change
Compare a new value with an original nonzero value.
Percentage difference
Compare two nonnegative values using their average.
Discount calculator
Find the final price and saving after a percentage discount.
Date difference calculator
Find the whole-day difference between two calendar dates.
Add days to date
Add or subtract a whole number of calendar days.
Age calculator
Calculate calendar age on a date you choose.
ISO week number
Find the ISO week and ISO week-numbering year.