Seed, fertilizer and spray for every field
Measure the field, choose the crop, enter your dose. Seed Calc gives the bags of fertilizer, the seed to buy, the spray tanks to fill and the margin of the season.
Scan with your phone to install
Free on Android · No account · No subscription
How it works
- 1
Get the field's area
Walk it with GPS, draw it on the map, or type it from your record.
- 2
Enter your dose
N-P-K, seed spacing, spray volume: the app turns them into bags and tanks.
- 3
Send the list
What to buy for the season, to your dealer, in one message.
Seed Calc is an Android app for farmers who want the quantities right before they buy. Fertilizer is sold in bags of urea, DAP and potash, not in kilograms of N, P and K; seed by the bag, not by the plant; spray by the tank. The app does the conversion for each field, on its real area.
Measure the field on the satellite map or by walking its boundary, or type the area from your land record. Each season then holds its seed, fertilizer, spraying and harvest. The Season tab adds up what to buy for all your fields, ready to send to your dealer.
- Fertilizer — an N-P-K dose into bags of urea, DAP and MOP. Fertilizer calculator
- Seed — spacing, germination and grain weight into seed for the field. Seed rate calculator
- Spraying — tanks to fill and product per tank, the last one included. Spray tank calculator
- The real area — walked, drawn or typed. Field area
There is no account and no subscription, and the calculations work without a signal. The app never supplies a dose or a price: you enter yours. Ads pay for the app, and one purchase removes them.
Everything to plan a season's inputs
Fertilizer calculator
From an N-P-K dose to the bags of urea, DAP and potash for the whole field.
Seed rate calculator
How much seed for the field, germination included, by count and by weight.
Spray tank calculator
How many tanks to fill, and how much product in each, the last one included.
Sprayer calibration
The volume your sprayer really applies, from a jug, a stopwatch and the GPS.
Field area
Five ways to get the area every quantity depends on.
Yield and margin
What each field earned this season, compared with last year.
Privacy
No account, no server of ours. Here is everything the app sends over the network.
Why Seed Calc
- Free: every feature
- No account, no subscription
- Calculations work without a signal
- Acres, hectares and local land units
- 43 languages
- Android 8.0 and later
See it in the app
The season: urea, DAP, MOP and seed for all your fields
Quick calculation on any area, without a field
A field with its area, plot number and seasons
A field drawn on the satellite map, with its sides
Spraying: tanks to fill and the dose for the last tank
Sprayer calibration: catch test and speed
Accounts: yield, costs and margin by field
Guides
NPK to urea, DAP, MOP
A soil test gives pounds of N, P and K. The dealer sells bags of products. Here is the bridge.
Seed rate per acre
Plants per acre from the spacing, seeds from the germination, pounds from the grain weight.
Spray tanks
The total of liquid, the full tanks, and the last tank, where most mistakes happen.
Calibrate a sprayer
A jug, a stopwatch and a measured pass give the gallons per acre your sprayer really applies.
Measure field area
Every quantity follows from the area. Here are the ways to get it, and how far to trust each.
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Know what to buy before the season
Measure the field, enter your doses, send the list. No subscription.